Question

Read the sentence. Strep throat can be a serious affliction with dire consequences if one is not cautious. What is the purpose of the sentence? to amuse to educate to warn to prove

Answer 1

It is to warn. 

It is not TO AMUSE - it is opposite. The person is attempting to induce fear. 

It can be TO EDUCATE - but in this case, to warn is the best one that fits. He states a fact in a way that will force people to act, not just learn facts. 

It is not TO PROVE - this would likely have statistics, and this evidence, it's rather a statement. 

Answer 2

To warn.

The sentence aims to give notice of the danger, impending evil, possible harm, or unfavorable consequence of having a strep throat. Although it does provide helpful information to the reader, the information is very limited to achieve the purpose of educating the reader about the strep throat (it does not say anything specific about what it is, the causes, the symptoms, the specific consequences nor the treatment).

Instead, it focuses on telling the reader that it may be a serious affliction if one is not cautious. Therefore, it warns us about the complications of the strep throat, so we could be more cautious.