Question

natural selection is a process by which organisms that are better adapted to their environment tend to
∘ increase in size.
∘ migrate.
∘ evolve new traits.
∘ survive.

Explanation:

Natural selection is about organisms with favorable traits (better adapted) having a higher chance to survive and reproduce. "Increase in size" is not related to natural selection's core (adaptation for survival, not size). "Migrate" is movement, not directly about adaptation for survival via natural selection. "Evolve new traits" is not accurate as natural selection acts on existing traits (adapted organisms survive, passing traits; new traits come from mutations, not direct result of natural selection's process here). "Survive" matches: better - adapted organisms are more likely to survive (and reproduce, but the option "survive" is the best fit here) as natural selection is the survival (and reproductive success) of the fittest (best adapted).

Answer:

D. survive (assuming the last option is labeled D; if the original options had labels like A, B, C, D with the last being "survive", then the answer is the option with "survive", e.g., if the options are A. increase in size, B. migrate, C. evolve new traits, D. survive, then the answer is D. survive)