The movement of water from the land to the atmosphere happens during transpiration and evaporation. On the other hand, water falling to the ground as precipitation is the definition for the rain. So we're talking about a bioma in which the transpiration and evaporation of water is higher than the amount of rain. We're looking for a very dry bioma, in which the rain is a rare phenomenon.
The rainforest bioma is well known by it's high amounts of rain, which is not what the question wants, so d) is incorrect.
Coniferous forests are found in very cold areas, and while the winter can be very dry the summer usually is very moisty, so c) is also incorrect.
Tundra is a bioma found in the coldest areas of Earth, and while some of those areas can be drier than any other bioma, with a very low amount of rains, the transpiration and evaporation is not so high because it's a very cold bioma with long periods without any sunlight. Therefore, the water doesn't move that much from the land to the atmosphere, and a) is also wrong.
The bioma that fits the description is the desert, a very dry bioma, with rare episodes of rain, and also a very hot environment, which causes lots of transpiration from plants and animals and, also, evaporation from the soil. Therefore, the correct answer is b) desert.