The correct answer is option 1, Jaisalmer. During the winter season, Jaisalmer experiences the highest atmospheric pressure compared to the other options mentioned.

Now let`s analyze the other options to see why they are not the correct answers:

Option 2, Leh: Leh is located in the Himalayan region and experiences very cold temperatures during winter. However, it does not have the highest atmospheric pressure during this season.

Option 3, Chennai: Chennai, located in the south of India, has a tropical climate and does not experience high atmospheric pressure during winter.

Option 4, Guwahati: Guwahati, located in the northeastern part of India, has a humid subtropical climate. While it may experience some changes in atmospheric pressure during winter, it is not the location with the highest atmospheric pressure during this season.

In conclusion, Jaisalmer is the place in India that experiences the highest atmospheric pressure during winter.