Narrowing your topic. The last one
Answer:
In a sentence, WHO and WHOM have different syntactic functions.
Explanation:
WHO
- WHO can be used as the subject of a sentence. For example, "who is your brother?"
- WHO can be replaced by he or she.
WHOM
- WHOM is used as the object of the verb or object of a preposition as in "who is helping whom?" or "I know the person to whom the letter was addressed" respectively.
- WHOM can be replaced by him or her.
In the system of voluntary restriction, if one person takes more than his or her share, it will ruin the system for everyone