Correct Answer: B

Rationale: The correct answer is 'B: Toddler.' A toddler is a young child typically between the ages of one and three who is just learning to walk. 'Obese' (choice A) refers to excess body fat, 'Geriatric' (choice C) pertains to elderly individuals, and 'Hale' (choice D) means strong and healthy, none of which are descriptive of a small child learning to walk.

Correct Answer: A

Rationale: The correct answer is 'A: Predict.' Anticipate and predict are synonyms, both implying foreknowledge or expectation. 'B: Evaluate,' 'C: Compare,' and 'D: Forestall' do not directly relate to the meaning of anticipate and are therefore incorrect choices.

Correct Answer: B

Rationale: 'Biologists' is a noun in the sentence, referring to a group of people who study wildlife and their behaviors. In this context, 'biologists' is not describing or modifying another noun, making it a noun itself. Therefore, options A, C, and D are incorrect.

Correct Answer: A

Rationale: The correct answer is 'Prefix.' A prefix is a word part that is placed before a root word to modify its meaning. In this case, a prefix changes the meaning of the root word. Choice B, 'Affix,' is a broader term that includes prefixes, suffixes, and infixes. Choice C, 'Suffix,' is a word part placed after a root word to modify its meaning, not before. Choice D, 'Vocab,' is unrelated to the word part placed before a word.

Correct Answer: B

Rationale: The correct answer is 'B: Reason.' 'Rational' means based on reason or logic. Choice A, 'Angry,' is incorrect as it does not relate to the meaning of 'rational.' Choice C, 'Rodent,' is a completely unrelated term. Choice D, 'Proportion,' also does not capture the meaning of 'rational,' which is about being logical or reasonable.