Answer:
Metaphor
<h2>What is a metaphor?</h2>
A figure of speech in which a term or phrase is applied to something to which it is not literally applicable in order to suggest a resemblance, as in "A mighty fortress is our God."
In the sentence, "My son is a greyhound out of the blocks when it's hometime," the son is being compared to this because of how fast he runs to get home.
Hence, the technique used in the phrase, "My son is a greyhound out of the blocks when it's hometime" is a metaphor.
The children would be the reflexive pronoun.
Snow instructs Katniss that she must convince all of Panem that she is in love with Peeta during the Victory Tour, and she must also convince Snow himself. Doing so is her only chance to save her family and friends.
