Question

which fragment could you correct by adding only a complete predicate? reachable by jeep or helicopter lions and other members of the cat family occurs on the african savannah roar to warn predators

Answer 1

That fragment that you could correct by adding only a complete predicate is lions and other members of the cat family.
For example:
Lions and other members of the cat family live in Africa.
The other options need more than just a predicate.