d
It is clear from given logic circuit, that out put \(Y\) is low when both the inputs are high, otherwise it is high. Thus logic circuit is \(NAND\) gate.

\(\begin{array}{|c|c|c|}\hline A & {B} & {Y} \\ \hline 1 & {1} & {0} \\ \hline 0 & {0} & {1} \\ \hline 0 & {1} & {1} \\ \hline 1 & {0} & {1} \\ \hline\end{array}\)