Answer:
A, threatening.
Explanation:
The definition of ominous is, "giving the impression that something bad or unpleasant is going to happen; threatening; inauspicious."
Answer:
B. “Something there is that doesn’t love a wall,
That sends the frozen-ground-swell under it,
And spills the upper boulders in the sun;
And makes gaps even two can pass a breast.”
Explanation:
Edge2020
I believe it's B! Participle phrases typically take the sentence and add some sort of modifier. An example of this that I've found is "Removing his pants, Ron jumped into the water to save the child." Another one is "The art museum, destroyed by a hurricane, was never rebuilt." The modifier can be removed from the sentence and it would still make sense.
He wrote you a letter yesterday.