A. Leroy is the subject of the sentence
Answer:
D
Explanation:
implicit means it is not directly stated and explicit means it is directly stated. The first two choices we can rule out are B and C because they incorrectly state what explicit and implicit mean. To find the answer, we look in the paragraph. There is nowhere where it says, <em>The central idea is</em>..., so we can conclude that D is the correct answer.
C. when you're stopped at a red signal about to turn green
The correct answer is A.
The excerpt indicates that all species are worth saving because you never know what beneficial role they play. The examples given in the excerpt are of small organisms -- even pests -- that ended up playing an important role. Therefore, the first statement is the best one.
