Explanation

(d)
Both O and S belong to same group but $H_{2}O$ is a liquid while$H_{2}S$ is a gas. This can be explained on the basis of electronegativity. In water due to the high electronegativity of oxygen hydrogen bonds are formed. As a result the molecules of $H_{2}O$ get associate together, hence water exists as a liquid at room temperature. On the other hand, the electronegativity of S is less and therefore, hydrogen bonding in $H_{2}S$ is almost negligible. As a result of which molecules of $H_{2}S$ are not associated and $H_{2}S$ exsists as a gas at room temperature.