Answer:
D.
Explanation:
A topic sentence is defined as "a sentence that expresses the main idea of the paragraph in which it occurs."
A topic sentence acts like a guide to the readers and helps them to know the main idea of the writer. A topic sentence also functions as a support to a thesis statement.
Answer:
you are missing some commas
Explanation:
the sentence should be
The sun was just slipping below the horizon when aunt Nakki , who had ridden her camel from the sultry areas. to the south, arrived at our camp