Final answer:
Rikki-Tikki-Tavi is a brave mongoose who saves Teddy's family from cobras in their garden, and Teddy views him as a hero.
Step-by-step explanation:
The correct summary from Teddy's perspective would be: "Rikki-Tikki-Tavi is a brave mongoose who protects Teddy's family from dangerous cobras in their garden." This reflects how Rikki-Tikki-Tavi, the cunning and valiant mongoose, became a guardian to Teddy's family by safeguarding them from the lethal threat posed by cobras, Nag and Nagaina, who had made their home in the garden. Teddy likely saw Rikki-Tikki-Tavi not just as a pet, but as a hero and a member of the family for his courageous deeds.