The incomplete question, I inferred from a general knowledge of the types of rhetorical strategies.
Explanation:
It is more likely use of metaphor because this rhetorical strategy compares two things together– which should not be taken literally. Also, note that the use of rhetoric in speech is to persuade listeners towards adopting the viewpoint of what is been said.
Here are some common rhetorical strategies:
1. Epistrophe
The strategy employed here involves a deliberate repetition of a word or phrase at the end of each sentence.
For example, note the phrase in the bracket from Abraham Lincoln's quote
“… that government of (the people), by (the people), for (the people), shall not perish from the earth.”
2. Anaphora
A strategy that also often involves repeating a word or phrase but at the beginning not the end of the sentences in the statement.
For example, note the word in the bracket in the statement below
“fight" in France, (we shall fight) on the seas and oceans, (we shall fight) with growing confidence and growing strength in the air, (we shall) defend our island, whatever the cost may be. (We shall fight) on the beaches, (we shall fight) on the landing grounds, (we shall fight) in the fields and in the streets, (we shall fight ) in the hills…”
