Like bees, ants are social animals. What does this mean?
a. They can be trained as pets
b. They live in large groups
c. They communicate through pheromones
d. They are extremely intelligent

b they live in large group is correct

I would say the answer is C.

Explanation: Pheromones allow communication among all the honey bee castes: queen–workers, workers–workers, queen–drones, and between adult bees and brood. In honey bees, as in other animals, there are two types of pheromones: primer pheromones and releaser pheromones.

I hope this helps you.

≅200-130 milions years ago pangea splited in 2 continents