Answer:
Some satellites help by investigating faraway objects that may be heading toward Earth.
Explanation:
The sentence that uses a synonym as a context clue to explain the meaning of the word <em>exploration</em> is: <em>Some satellites help by investigating faraway objects that may be heading toward Earth.</em><em> </em>
Synonyms are words that have similar or the same meaning. The synonym of the word <em>exploration</em> in the given case is <em>investigating</em>. These words don't have identical meanings, but both of them can help us understand what the other one means.
Reflecting on the past because he is remembering of the night b4 and building characterization
