I'd say that the third sentence, "We'd watch Shirley's old movies on TV as though they were training films" shows that the mother knows "how" her daughter can become a prodigy.
The first sentence just compares the girl to Shirley Temple, but doesn't show that the mother knows how the daughter can become a prodigy, just that she could be.
And the second sentence is just a description of their dining habits.
The last sentence is a very general statement that does not indicate that the mother knows how the child could possibly become a prodigy. Therefore, the second sentence is correct because it shows them watching the Shirley Temple videos like "training videos", which would help the girl become a prodigy.
I hope this helped.
The correct answer is "that over 80 percent of polluters meet the Federal regulations2".
The subordinate sentence begins with a relative pronoun "that" in this case, all the since from that word to the full stop forms the subordinate or dependent clause, it is adding detail about the noun, which is one of the functions of this kind of clauses.
Explanation:
aren't we already living in it ?
Beowulf's greatest enemy is no monster but himself and his pride, or hubris. It is his greatest weakness which results in his death. It is predicted or foreshadowed throughout the entire story. Begining with the stories of his youth and then his private conversations with Hrothgar in Heorot. His avarice and obsession for the attention of his friends are the result of his pride, not separate characterstics.