Respuesta :
Answer:
The art of letter writing seems to have declined sharply in recent years.
Explanation:
A topic sentence (also called a focus sentence) is the most important sentence in a paragraph. It summarizes the main idea of the paragraph and plays an important role in its organization. It's often the first sentence (just like in this case).
The art of letter writing seems to have declined sharply in recent years summarizes the central idea of the given paragraph well. All of the following sentences are connected to it and expand the idea, telling us about possible causes of the phenomenon described in the first sentence.
Answer:
Topic Sentence: Sentence 3
Paragraph Structure "Shape": Inverted Triangle
Pattern: Cause-Effect
Explanation:
Trying to help everyone!