Meaning: 'Defined' means to explain the meaning of something, in this case, ethics.

Wrong options:

• intended: 'Intended' is the past participle of 'intend,' which does not fit the context of explaining what ethics is.
• measure: 'Measure' is a noun or verb that refers to assessing something, which does not appropriately describe ethics in this context.
• twosome: 'Twosome' is a noun that refers to a pair of people or things, which is irrelevant to the definition of ethics.

Correct answer: twofold

Explanation: The term 'twofold' is an adjective that indicates there are two aspects or parts to the need for ethics in business. It fits grammatically and contextually as it describes the dual nature of the necessity for ethics.

Meaning: 'Twofold' means having two parts or aspects.

Wrong options:

• intended: 'Intended' does not convey the idea of duality and is not relevant to describing the need for ethics.
• measure: 'Measure' does not relate to the concept of dual aspects and does not fit grammatically in this context.
• twosome: 'Twosome' refers to a pair and does not accurately describe the two aspects of the need for ethics.

Correct answer: prevents

Explanation: The verb 'prevents' is in the present tense and fits grammatically as it describes an ongoing action that ethics performs in relation to external constituents. It logically follows the need for ethics in business.

Meaning: 'Prevents' means to stop something from happening, in this case, harm to external constituents.

Wrong options:

• intended: 'Intended' does not fit as it does not convey an action related to stopping harm.
• measure: 'Measure' does not relate to the action of stopping harm and does not fit grammatically in this context.
• twosome: 'Twosome' is a noun that does not convey any action and is irrelevant here.

Correct answer: ensure

Explanation: The verb 'ensure' fits grammatically as it indicates an action that ethics helps the organization to perform, specifically in relation to its success. It aligns with the context of internal benefits derived from ethical practices.

Meaning: 'Ensure' means to make certain that something will happen, in this case, the success of the organization.

Wrong options:

• intended: 'Intended' does not convey an action related to guaranteeing success and does not fit grammatically.
• measure: 'Measure' does not relate to the action of guaranteeing success and is not appropriate in this context.
• twosome: 'Twosome' is a noun that does not convey any action and is irrelevant here.