Answer: Something you give someone for answering your question well
Explanation:
If they explained what you asked thoroughly, you could choose to give them brainliest meaning they had the brainliest/most reasonable/comprehendable answer.
After a few minutes of them answering you have a choice to 'mark brainliest' and if you want to, you can!
Also, its your choice so if you don't want to give anyone brainliest, you don't have to!
I believe it is the final sentence: I left for college when I was 18 (that was also the age at which I was married). This is because the parentheses also give information about another incident that took place at the time - his/her marriage.
