Question

read the paragraph, then choose the word that best completes the sentence.
scientists want to study jupiter because the planet may hold clues about the formation of the solar system.
according to scott bolton, an astrophysicist at the southwest research institute in texas, jupiter is like a time
capsule. many astronomers theorize that jupiter was the first planet in the solar system to form. they believe that
jupiter got most of the mass that remained after the suns creation, and its enormous gravity field has enabled it
to hold on to that original material. astronomers also believe that this is why the planet is so immense. jupiter is
so big that it could contain everything in the solar system, minus the sun.
scientists believe jupiter could be ________.
a reactive
b lusterless
c informative
d polluted

Explanation:

The paragraph states that Jupiter may hold clues about the formation of the solar system. The word "informative" means providing useful information. Since scientists study Jupiter for the clues (information) it may hold, "informative" is the most appropriate word. "Reactive" means tending to react, which is not relevant here. "Lusterless" means without shine or brilliance, which has no connection to the context. "Polluted" means made unclean, which is also not related to the idea of holding clues.

Answer:

C. informative