The apples were bright red, they didn't taste good. Choose the best correction for this sentence with a comma splice. The apples were bright red they didn't taste good. The apples were bright; red they didn't taste good. The apples were bright red but they didn't taste good. The apples were bright red, but they didn't taste good.

The apples were bright red, but they didn't taste good.

Explanation:

The author of the sentence is showing a statement contrary to the statement that has already been said, in which case, the two statements must be joined with words like "but" and "entertaining". In addition, we must pay attention to the fact that words like "but" and "meanwhile" must accompany a comma that must be placed before these words.

In this case, the only correct alternative is: "The apples were bright red, but they didn't taste good."

D

Explanation:

d) the narrator even suggested that the white whale, moby d, was ubiquitous and present in every ocean at every moment.  

quite an interesting way to teach topic sentences, because the answer to this question is the best definition of a topic sentence that one can present, it is as if answering the questions taught you how to do it, this is some real teaching, it is terribly well-done.

the topic sentence in this paragraph is:

topic sentences writers stay on track and keep a paragraph from becoming an aimless collection of sentences about an idea.

which incidentally tells you what a topic sentence should be.