Give one word substitute for “A large number of fish swimming together”:

Correct option is A

The correct one-word substitution for "A large number of fish swimming together" is "shoal." • Definition: A "shoal" refers to a large group of fish that swim together in a coordinated manner, often seen as a mass in the water. • Contextual Fit: The term perfectly describes the collective behavior of fish, which is often observed in nature as a strategy for protection or efficient foraging. • Meanings of the other given options:
· "Troupe" generally refers to a group of performers, particularly dancers or actors.
· "Swarm" is used predominantly for insects like bees or wasps.
· "Litter" refers to a group of young animals born to an animal at one time, primarily used for mammals. Thus, "shoal" is the most appropriate and specific choice for describing a large number of fish swimming together.