Explanation:

- On 29th November 2021, the Asian Development Bank (ADB) provided financial assistance to the state of Uttarakhand in India.

- This was aimed at improving water supply and sanitation services within the region.

- The project was crucial for enhancing infrastructure and ensuring better public health standards.

- Option 1: $75 Million - This amount is not the correct figure approved for the Uttarakhand project.

- Option 2: $100 Million - This is an incorrect option; the project involved a larger financial commitment.

- Option 3: $125 Million - This amount is also not accurate for the specific loan approved on the mentioned date.

- Option 4: $150 Million - This is the correct amount of loan sanctioned by ADB for the water supply and sanitation project in Uttarakhand.

- Option 5: $200 Million - This amount is too high for the approved loan for this particular project.