Final answer:
Aglaea, Euphrosyne, and Thalia are collectively known as the Charites or Graces in Greek mythology.
Step-by-step explanation:
Aglaea, Euphrosyne, and Thalia are collectively known by the name Charites, also known as the Graces in Greek mythology. These goddesses are often depicted as the daughters of Zeus and Eurynome or Dionysus and Aphrodite, and are associated with beauty, charm, and creativity. In Roman mythology, they are referred to as the Gratiae. Answer choice a) Charites is the correct name by which these deities are collectively known.