Step 1: Recall the term used for these women.
Vedic tradition calls women who composed or debated Vedic knowledge "rishikas."
Step 2: List four names with a one-line identity each.
Gargi debated Yajnavalkya in King Janaka's court. Maitreyi discussed the nature of the self with her husband Yajnavalkya. Lopamudra, wife of Agastya, is linked to Rig Vedic hymns. Ghosha, another rishika, also has hymns credited to her in the Rig Veda.
Final Answer:
Gargi, Maitreyi, Lopamudra, and Ghosha are four accepted examples of Vedic-period female scholars.