(5) Although the exact cause is not known, gastrointestinal problems will result after a pet ingests grapes or raisins.

Choose the BEST revision of sentence (5).

A)
Although the exact cause is not known, gastrointestinal problems result after a pet ingests grapes or raisins.

B)
Although their exact cause is not known, gastrointestinal problems result after a pet ingests grapes or raisins.

C)
Although the exact cause is not known, gastrointestinal problems can result after a pet ingests grapes or raisins.

D)
Although their exact cause is not known, gastrointestinal problems can result after a pet ingests grapes or raisins.

hi u can delete this

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.

c is a symbol. when bernice gets her hair cut, it is the authors way of showing the affects and demands of pier pressure and the over-all attitudes of people at the time.

the answer is c. the wind