The answer is B. Metaphore
Here is why:
a figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable.
"“I had fallen through a trapdoor of depression,”
Answer:
Pros:
Inexpensive
Seems to be delicious
Easy to find, usually at eye level
Cons:
Unhealthy ingredients
Bad for you
Usually has a lot of fat or carbs or sugar
Explanation:
He didn't tell Elizabeth that he was alone with Abigail when they talked.
The sentence that is correctly construed with an independent clause and a dependent clause is A) As they examined the evidence afresh, they thought of a completely different explanation.
The other sentences don't have dependent clauses, only phrases.
The one ingredient that helps, but is not necessary to an effective speech delivery, is that it is the result of the speaker's natural talent and gift.
With proper preparation and a healthy dose of courage, anyone can be an effective public speaker. The important elements are that message delivery is impactful, the speech is influential towards the audience, and that audience expectations are met or exceeded. Natural talent helps, but thorough preparation and careful speech planning go much farther towards an effective speech.