The author mentions the trail pheromone of the lea...

Câu hỏi: The author mentions the trail pheromone of the leafcutter ant in paragraph 2 to point out

A. a type of ant that is common in many parts of the world

B. how little pheromone is needed to mark a trail

C. the different types of pheromones ants can produce

D. that certain ants can produce up to one milligram of pheromone