Many plants can grow in the littoral zone of a lake because a. sunlight reaches its bottom. b. there are no algae. c. there are no animals. d. there is both salt water and fresh water.

The littoral zone is the zone close to shore. We can expect this zone to be shallow, and that sunlight would reach the lake floor. Therefore, the answer is a: sunlight reaches its bottom. Macrophytes can be rooted to the lake floor within the littoral zone and still obtain sufficient sunlight for photosynthesis.