The correct answer is D. There is no single topic sentence.
Explanation:
A topic sentence is a sentence that summarizes the main idea of a paragraph, this sentence is usually the first sentence in the paragraph and states what the paragraph is about. On the other hand, the paragraph presented here deals with multiple topics or concepts including the Earth's crust, the plates, the Earth's mantle, volcanoes, earthquakes, and mountain ranges, this means the paragraph is related to geography but explores multiple ideas that are not summarized in any of the sentences presented in the paragraph, neither at the beginning nor at the end of it. Thus, as there is no any sentence or phrase that states what the paragraph is about as a unit or summarizes all the ideas of the paragraph there is no a single topic sentence because this paragraph includes multiples ideas that might be difficult to summarize in only one topic sentence.
Answer:
Section 1
A. We discussed about the problem so thoroughly
Section 2
C. got drowned in the Pacific Ocean.
Section 3
A. I could not put up in a hotel
Section 4
C. is free now from the narrow vested interests.
Explanation:
God showed his mercy by casting them out of the Garden and making everybody sinners
It was foggy this morning however there were many cars on the street this morning.
The autumn is coming as a result yellow leaves are falling down.
The workshop is small however it has many tools.
The goods are on sale hence there are many customers in the shop.
