The diagram of a logic circuit is given below. The output `F` of the circuit is represented by

Explanation

`F = (W + X).(W + Y)`
`= W.W + W.Y + X.W + X.Y`
`= W + W.Y + X.W + X.Y`
`= W(1 + Y) + X.W + X.Y = W + XW + X.Y`
`= W(1+X) + X.Y = W + X.Y`.