(A) Mahathir Mohamad
(B) Najib Razak
(C) Muhyiddin Yassin
(D) Ismail Sabri Yaakob
The answer is: (D) Ismail Sabri Yaakob
The current prime minister of Malaysia is Ismail Sabri Yaakob (since 21 August 2020). He succeeded the former prime minister Muhyiddin Yassin.