In the Islamic belief system, the opposite of Tawhīd is
Shukr
Qadā
Shirk
Qadar
Correct answer is C
In Islam, shirk is the sin of idolatry or polytheism. It means ascribing to, or the establishment of, partners placed beside Allah. It is termed Tawhid. Mušrikūn مشركون are those who practice shirk, which literally means "association" and refers to accepting other gods and divinities alongside God