Answer:
True
Explanation:
True, the commas act like parentheses. So we could say "His doctor could not identify the problem."
As for the periods, capitalization, and layout, it is all correct.
Answer:
"Since I want to be accepted to an ivy league college".
Explanation:
The given sentence is: Since I want to be accepted to an ivy league college, I plan to study hard during my high school years.
Now, a dependent clause is a clause that provides a sentence with additional information, however it cannot stand alone as a sentence.
Now, in the given sentence in the question, the depend lent clause will be;
Since I want to be accepted to an ivy league college.
This is because it tells us why you plan to study hard during your high school years. However, it cannot stand alone as a sentence.
What happen to choice A so i can help you
The question suggests that there are a number of possible answers to choose from. You haven't shown those, but I would take a wild guess and say, possibly, being bullied as a child?