Answer:
Option D
Explanation:
(A) is a NAND gate so the output is
$\overline{1\times1} =\overline{1} = 0 $
(B) is a NOR gate so output is
$\overline{0+1} =\overline{1} = 0 $
(C) is a NAND gate so output is
$\overline{0\times1} =\overline{0} = 1$
(D) is a XOR gate so output is
0 ⊕ 0 = 0
