Which sentence uses the pronoun correctly? es )
A)
Whom is your dentist?
B)
To who are you speaking?
You cast your vote for who?
Through whom did you arrange your vacation?

the correct sentence is " you cast your vote for who ? "

D) Through whom did you arrange your vacation?

lab rats that ate more artifical sweeter gained more weight than those who ate sugar and they had “lower levels of a hormone called glp-1, which affects how full we feel.”