Meaning: 'Explore' means to investigate or examine something in detail.

Wrong options:

• determines: The verb 'determines' implies a conclusion or result rather than an action of investigation, which does not fit the context of discussing the issue.
• dispute: The verb 'dispute' suggests arguing against something, which does not align with the intent of examining the issue.
• despite: 'Despite' is a preposition that indicates contrast, which does not fit as it does not convey an action related to the text's purpose.
• significant: 'Significant' is an adjective that describes importance, but it does not function as a verb to indicate an action taken by the text.
• changing: The verb 'changing' implies a process of alteration, which does not fit the context of exploring an issue.
• stimulates: The verb 'stimulates' suggests causing a reaction or response, which does not align with the action of investigating the issue.

Correct answer: despite

Explanation: The word 'despite' serves as a preposition indicating contrast, which fits grammatically and contextually as it introduces the idea that even with environmental differences, genes still play a crucial role.

Meaning: 'Despite' means in spite of; it introduces a contrast to the statement about environmental differences.

Wrong options:

• determines: 'Determines' is a verb that does not fit as it does not indicate contrast but rather a conclusion or result.
• dispute: 'Dispute' is a verb that implies arguing against something, which does not fit the context of contrasting environmental differences.
• explore: 'Explore' is a verb that indicates investigation, which does not serve the purpose of indicating contrast in this context.
• significant: 'Significant' is an adjective that describes importance, which does not fit as it does not convey a contrasting relationship.
• changing: 'Changing' is a verb that implies alteration, which does not fit the context of contrasting environmental factors.
• stimulates: 'Stimulates' is a verb that suggests causing a reaction, which does not align with the idea of contrast.

Correct answer: dispute

Explanation: The verb 'dispute' fits grammatically as it indicates the speaker's action of arguing against the previous claim about genes. It aligns contextually with the speaker's intention to challenge the assertion made in the text.

Meaning: 'Dispute' means to argue against or question the validity of something.

Wrong options:

• determines: 'Determines' implies a conclusion rather than an action of arguing, which does not fit the context of challenging a point.
• despite: 'Despite' is a preposition that does not convey an action and therefore does not fit in this context.
• explore: 'Explore' suggests investigation rather than arguing against a claim, which does not align with the speaker's intent.
• significant: 'Significant' is an adjective that describes importance, which does not function as a verb to indicate an action taken by the speaker.
• changing: 'Changing' is a verb that implies alteration, which does not fit the context of disputing a claim.
• stimulates: 'Stimulates' suggests causing a reaction, which does not align with the action of arguing against a point.

Correct answer: significant

Explanation: The adjective 'significant' fits grammatically as it describes the noun 'part,' indicating the importance of the environmental role. It aligns contextually with the speaker's argument about the influence of the environment.

Meaning: 'Significant' means important or noteworthy, indicating the crucial role of the environment.

Wrong options:

• determines: 'Determines' is a verb that does not fit as it does not describe the importance of a part in this context.
• dispute: 'Dispute' is a verb that does not function as an adjective to describe the role of the environment.
• explore: 'Explore' is a verb that does not fit as it does not describe the nature of the part being discussed.
• changing: 'Changing' is a verb that implies alteration, which does not fit as it does not describe the importance of the role.
• stimulates: 'Stimulates' is a verb that suggests causing a reaction, which does not align with describing the role of the environment.

Correct answer: determines

Explanation: The verb 'determines' fits grammatically as it indicates the action of deciding or influencing how genetic inheritance manifests. It aligns contextually with the idea that the environment plays a crucial role in shaping genetic outcomes.

Meaning: 'Determines' means to decide or establish something, indicating the role of the environment in shaping genetic inheritance.

Wrong options:

• dispute: 'Dispute' is a verb that implies arguing against something, which does not fit the context of describing the role of the environment.
• explore: 'Explore' suggests investigation rather than indicating a decisive action, which does not align with the context.
• despite: 'Despite' is a preposition that does not convey an action and therefore does not fit in this context.
• significant: 'Significant' is an adjective that describes importance, which does not function as a verb to indicate an action taken by the environment.
• changing: 'Changing' is a verb that implies alteration, which does not fit the context of determining outcomes.
• stimulates: 'Stimulates' suggests causing a reaction, which does not align with the action of determining how genetic inheritance plays out.