What is the correct way to write sentence 4?

Question

• Scientists subsequently discovered two distinct groups of coelacanths, one living near the coast of Indonesia and the other near East Africa.
® Scientists subsequently discovered two distinct groups of coelacanths. One living near the coast of Indonesia and the other near East Africa.
Scientists subsequently discovered two distinct groups of coelacanths, one living near the coast of Indonesia, the other lived near East Africa.
Scientists subsequently discovered two distinct groups of coelacanths, one lived near the coast of Indonesia. And the other near East Africa.

Answer 1

The correct way to write sentence 4 is:

Scientists subsequently discovered two distinct groups of coelacanths, one living near the coast of Indonesia and the other near East Africa.

This maintains proper grammar and clarity by using a single sentence with a coordinating structure.