The easternmost longitude is 97° 25'E and the westernmost longitude is 68° 7'E.

The eastern-most longitude of India is 97°25’E.

Explanation:
India is located in the eastern hemisphere, which means that its longitude is measured in degrees east of the Prime Meridian. The Prime Meridian is the line of longitude that divides the Earth into the Eastern Hemisphere and the Western Hemisphere, and it passes through Greenwich, London.

To determine the eastern-most longitude of India, we need to look at the longitude lines on the map and find the one that is closest to India's easternmost point. The longitude lines are numbered from 0° to 180° both east and west of the Prime Meridian.

India is a vast country that extends from the northernmost point of Jammu and Kashmir to the southernmost point of Tamil Nadu. The easternmost point of India is in the state of Arunachal Pradesh, near the town of Kibithu.

By looking at the map and comparing the longitude lines, we can see that the longitude line that passes through Kibithu is approximately 97°25’E. This means that the eastern-most longitude of India is 97°25’E.

To confirm this, we can also use the coordinates provided in the options. Option B states 97°25’E, which matches with our earlier calculation. Therefore, the correct answer is option B - 97°25’E.

In conclusion, the eastern-most longitude of India is 97°25’E.