<span>Its members supported conservative political causes and politicians, such as Ronald Reagan</span>
I would go with d. Courteous because it means considerate in matter.
You did not provide the excerpt but in the end Jekyll was not able to permanently resist. It was implied that he was actually Hyde deep inside and that Hyde is the one who will overtake and he won't be able to come out again. In the end he dies as Hyde and people find out what happened out of letters that he sent while he was sane.
Answer:
Dear Sir/Mam, I am (Your Name), student of (Class And Section). I would like to bring to your kind attention that due to (Mention your reason) I will unable to come to school for next (Number Of Days). I request you to kindly provide me with leave for (Number of days) from (start date) to (end-
