Answer:
A
Explanation:
It’s definitely not C, and B is rather odd. That leaves A and D. However, D is mostly about contradicting the main statement. That leaves A. To see evidence, the paragraph mostly talks about this.
I hope this helps and that this is the correct answer.
A. posting an online message is the correct answer
Prepositional Phrases
DEFINITION: a group of words containing at least one preposition and one noun; the subject of the sentence can never be in the prepositional phrase; a prepositional phrase can never contain a verb
EXAMPLE: across the puddle
EXAMPLE: across the wavering puddle (wavering is a progressive verb acting as an adjective)