The correct response is:
The hot tea will transfer thermal energy into the air, and the energy transfer will continue until the tea is at room temperature.
This is because thermal energy flows from a hotter object (the tea) to a cooler environment (the air) until thermal equilibrium is reached, which means the temperatures become equal. Since the tea is initially hotter than the air, it will lose heat until it cools down to the room temperature of 30°C.