In which of the following case evaporation of water will be slowest?

Question

$\begin{array}{1 1} \text{a. A tray of water kept in the sunlight} \\ \text{ b. A kettle of water kept on the burner} \\ \text{ c. A glass of water kept in a room} \\ \text{ d. A bucket of water kept on rooftop} \end{array}$