Final answer:
The correct subject pronoun to use when talking about two women is 'Ellas'.
Step-by-step explanation:
The correct subject pronoun to use when talking about two women is Ellas. For example, in the sentence 'Ellas son doctoras o veterinarias?' it means 'Are they doctors or veterinarians?'. This is because 'ellas' is the subject pronoun that specifically refers to a group of two or more women.
Learn more about subject pronouns in Spanish