You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Many types of organisms live in a meadow. With the introduction of a large, swift-moving predator into the meadow ecosystem, which group of organisms will MOST likely have an advantage of surviving and reproducing?
(A) mice that have the thickest fur (B) foxes that have the largest ears (C) gophers that dig the deepest holes (D) rabbits that can run the fastest
D

Planting certain crop plants in a field causes a disruption of the natural nitrogen cycle in that field. Which outcome would this disruption most DIRECTLY cause in the field over time?
(A) topsoil erodes (B) soil nutrients decrease (C) desert conditions appear (D) atmospheric carbon dioxide increases
B

The Hubble Space Telescope is a telescope that NASA launched into space in 1990. Scientists most likely prefer to use the Hubble Space Telescope instead of a land-based telescope because it provides better accuracy at
(A) predicting solar eclipses. (B) investigating faraway galaxies. (C) investigating the size of Venus. (D) predicting the phases of the Moon.
B