scenario: your paragraph ends abruptly: \i went to the beach.\ what is missing? a topic sentence a question…

Brief Explanations:

A concluding sentence wraps up the main idea of a paragraph. Since the paragraph ends abruptly with "I went to the beach", it lacks a proper conclusion that ties up the content. A topic sentence introduces the main idea (not relevant here as the issue is the ending). A question is not about the structure of ending a paragraph. More adjectives would be about description, not paragraph - ending structure.

Answer:

C. A concluding sentence that wraps up the main idea