1. In which of the following ways do social insects benefit most from having several types or castes within the species? (A) Each colony is able to include a large number of individuals. (B) The secretions or odors produced by the protective caste are an effective defense. (C) The division of the species into castes ensures the survival of the fittest. (D) Large numbers of the worker caste can migrate to start new colonies. (E) The specialized structure of each caste permits division of labor and greater efficiency.