Explanation:

- Option 1: Razia Sultana

- She was the first and only female ruler of the Delhi Sultanate.

- She ruled from 1236 to 1240 AD, making her the first Muslim woman ruler in medieval India.

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- Option 2: Sultana Chand Bibi

- Known for defending Ahmednagar against the Mughal forces.

- She was not a ruler in the same period.

- Option 3: Rani Mangammal

- A queen regent of the Madurai Nayak dynasty in South India.

- Not associated with the Delhi Sultanate.

- Option 4: Begum Samru

- A powerful ruler of a small kingdom in North India during the late 18th century.

- Her timeline is much later than the medieval period.

Razia Sultana is indeed the correct answer among these options.