The factual details te author includes are:
-It fell to earth at approximately 3:15 p.m. on June 12, 2014.
-NASA scientis concluded that the spherical metal object was likely part of a spacecraft that survived reentry.
You need an objective pronoun here, and the only such pronoun is <em>us. </em>All of the other pronouns are subject pronouns.
The animated movie was more enjoyable to the children that to us. The correct answer is D.