Answer:
I’m not totally sure but I would say the body provides the details of the purpose of the letter.
Explanation:
I hope this helps :)
Next time leave an image using the icon but it’s just grey.
Answer:
The reasons why marks and grades don't reflect a student intelligence's is that they might not be good in academic subjects like mathematics, english, biology and etc but they might be really smart in coding, gaming and other non-academic stuff but it's important in reality. Others might be suffering a condition which doesn't allow them to do well, but if they weren't suffering from the condition in the first place, they would be smarter than an average person.
I am sick, weak, and don’t want to go to school today.
Commas is what this sentence needs if I interpreted this right.