Explanation:

- Option 1: Khawla bint al-Azwar

- A legendary female warrior from the time of early Islamic conquests.

- Not a ruler but known for her valor on the battlefield.

- Option 2: Khadija

- First wife of the Prophet Muhammad.

- Not a ruler; known for her significant role in early Islam and business acumen.

- Option 3: Razia Sultana

- The only female Muslim ruler of India.

- Ruled the Delhi Sultanate in the 13th century.

- Known for her administrative skills and breaking gender norms.

- Option 4: Nusaybah bint Ka'ab

- An early convert to Islam.

- Celebrated for her bravery in battle, but not a ruler.