The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Coconut is a simple fleshy fruit of which pericarp is differentiated into three layers as epicarp, mesocarp, and endocarp. Coconut epicarp is thick and waterproof. Fibrous mesocarp of coconut renders the coconut to float in water. Such fibrous and waterproof fruits can float for long distances. The stony endocarp provides protection from external injury. Due to all these reasons, coconut can be dispersed through water without losing viability. Therefore, it is distributed more near the coastal regions. Thus, the correct answer is option A.