During summer, Babu carries water in a transparent plastic bottle to his school. One day, he left the bottle in the school. The bottle still had some water left in it. The following day he observed some water droplets on the inner surface of the empty portion of the bottle. These droplets of water were formed due to

Question

$\begin{array}{1 1}\text{a. Boiling and condensation} \\ \text{ b. Evaporation and saturation} \\ \text{ c. Evaporation and condensation} \\ \text{ d. Condensation and saturation} \end{array}$