A synonym is . A. a word that means the opposite as another word

B. A word or phrase that gives information about another word

C. a word that means the same as another word

C is the closest

Explanation:

The actual def. of a synonym is "a word having the same or nearly the same meaning as another"

there is 2 main differences, basically which are the users and the market. the other difference is the kind of content

people who use tik tok are mainly people from east asia, kind of like the app douyin. musically, on the other hand, are used by people from america or european countries.

while tik tok videos show things like daily life videos, comedy, or just funny videos, musically are like people mimicking songs with their own actions, 'imitate' singers and video clips.

hope this !

i believe the answer is d : )