Meaning: 'Slammed' means to hit something with great force.

Wrong options:

• thrive: 'Thrive' is a verb that means to grow or develop well, which does not fit as it describes a state of being rather than an action of impact.
• thrill: 'Thrill' is a verb that means to cause excitement, which is unrelated to the context of an asteroid hitting Earth.
• picked: 'Picked' is the past tense of 'pick,' which does not relate to the action of an asteroid impacting Earth.
• brought: 'Brought' is the past tense of 'bring,' which does not convey the forceful impact needed in this context.
• mapping: 'Mapping' is a gerund that refers to creating a representation, which does not fit the action of an asteroid hitting.
• entering: 'Entering' is a present participle that implies movement into a space, which does not apply to the context of an asteroid impact.

Correct answer: picked

Explanation: The verb 'picked' is in the past tense and indicates that tiny mammals gradually acquired adaptations over time. This aligns with the context of evolution and survival following the extinction event.

Meaning: 'Picked' means to select or acquire something gradually.

Wrong options:

• thrive: 'Thrive' is a verb that means to grow or develop well, which does not fit as it describes a state rather than an action of acquiring adaptations.
• thrill: 'Thrill' is unrelated as it refers to causing excitement, not the process of adaptation.
• brought: 'Brought' does not fit as it implies transferring something rather than acquiring adaptations.
• slammed: 'Slammed' is not applicable here as it refers to a forceful impact, not the gradual process of adaptation.
• mapping: 'Mapping' does not relate to the acquisition of adaptations and is more about representation than evolution.
• entering: 'Entering' implies movement into a space, which does not fit the context of adaptation.

Correct answer: thrive

Explanation: The verb 'thrive' indicates that the tiny mammals not only survived but flourished in the aftermath of the disaster. This fits the context of the sentence, which discusses their successful adaptation.

Meaning: 'Thrive' means to grow or develop successfully.

Wrong options:

• picked: 'Picked' refers to acquiring adaptations, which does not fit the context of flourishing after the disaster.
• thrill: 'Thrill' is unrelated as it refers to causing excitement, not the state of survival or growth.
• brought: 'Brought' does not fit as it implies transferring something rather than describing a state of flourishing.
• slammed: 'Slammed' is about impact and does not relate to the state of thriving after the event.
• mapping: 'Mapping' refers to representation and does not convey the idea of flourishing or surviving.
• entering: 'Entering' implies movement into a space, which does not fit the context of thriving.

Correct answer: mapping

Explanation: The gerund 'mapping' indicates the action of creating a representation of the interactions between ancient animals and their ecosystems. This fits grammatically and contextually as it describes the method used in the study.

Meaning: 'Mapping' means creating a visual representation or diagram of something.

Wrong options:

• picked: 'Picked' does not fit as it refers to acquiring something rather than the action of studying interactions.
• thrill: 'Thrill' is unrelated as it refers to causing excitement, not the process of studying interactions.
• brought: 'Brought' does not fit as it implies transferring something rather than the action of mapping interactions.
• slammed: 'Slammed' is about impact and does not relate to the study of interactions.
• thrive: 'Thrive' refers to flourishing and does not fit the context of the study's methodology.
• entering: 'Entering' implies movement into a space, which does not fit the context of mapping interactions.