In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

Gas can fill any container it is given, and liquid (A) is standard weight and size (B) is the opposite of variable (C) only needs a few (D) uses what it needs
D

Which does light from the sun arrive at in final time length? (A) Uranus (B) Mars (C) Pluto (D) Earth
C

When cutting down rain forests, it is important to keep in mind air quality. When too many trees are cut down in a given area, there may be decrease in the air's (A) quality (B) carbon dioxide (C) helium amounts (D) carbin dioyide levels

A