In this question, we are given two lists: List I and List II. We need to match the river basin in List I with the corresponding town in List II.

List I consists of the river basins: Bhagirathi, Alaknanda, Nayar, and Ganga.

List II consists of the towns: Landowne, Narendra Nagar, Uttarkashi, and Pauri.

According to the given options, the correct matching is:

Option 1: Bhagirathi-1. Landowne

Option 2: Alaknanda-2. Narendra Nagar

Option 3: Nayar-3. Uttarkashi

Option 4: Ganga-4. Pauri

The correct answer is Option 2, with the matchings as follows:

Bhagirathi - Landowne

Alaknanda - Narendra Nagar

Nayar - Uttarkashi

Ganga - Pauri

Therefore, the correct answer is (b) 3 4 1 2.

Note: The answer provided in the question is generally correct. However, without any further information or clarification, it is difficult to say if the answer is completely accurate. It is always good to verify the information from