Final answer:
The League of the Scarlet Pimpernel is comprised of twenty English gentlemen who rescue aristocrats during the French Revolution, led by the mysterious Scarlet Pimpernel.
Step-by-step explanation:
The League of the Scarlet Pimpernel is a fictional secret society featured in the novel 'The Scarlet Pimpernel', written by Baroness Orczy. The league consists of twenty English gentlemen who, under the leadership of the enigmatic character known as the Scarlet Pimpernel, undertake daring rescues of aristocrats during the Reign of Terror in the French Revolution. The number of members in the league is indeed significant, as it underscores the breadth and secretive nature of the organization, which is able to orchestrate complex rescue missions with a relatively small but dedicated group.