The diagram of a logic circuit is given below. The output of the circuit is reprsented by

Explanation

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