Which factor to first drive plants to live on land? a). greater access to sunlight on land. b). lack of competition in the water. c). greater access to water on land. d). lack of turgor pressure in the water

The answer is A greater access to sunlight on land.

Option A, greater access to sunlight on land

Explanation:

The plants that first moved to land were basically green algae. These green algae consists of chlorophyll and thus were able to produce food for themselves and other species depending on them. Since sunlight is vital for the photosynthesis , the  green algae’s  tended to move towards land some 800 million years ago. Also with the development of vascular tissues , plants became well efficient to survive on land.

Hence, option A seems to be the right choice of answer.