<span>The
first sentence of each paragraph is not indented</span>
In a block formation business letter, there is no need to indent
the first sentence in each paragraph. All the sentences are aligned to the left
margin of the paper; so are the contents of the letter are aligned to the left
margin.
If the underlined phrase is 'deep in the forest', then the answer is A, 'adverb phrase', because it denotes the place where the action happened.
The answer is A
The focus is often on facts or evidence
You're welcome! ^^