Option 1 states that both statements are true, and Statement II is the correct explanation of Statement I.

Statement I states that the Kullu Valley in Himachal Pradesh receives copious snowfall during winter. This statement suggests that the valley experiences a significant amount of snowfall during the winter season.

Statement II states that the Kullu Valley receives moisture-bearing wind of the Western Disturbances during winter. This statement suggests that the valley receives winds that bring moisture from the Western Disturbances, which are weather systems originating from the western regions.

According to Option 1, both of these statements are true, and Statement II is the correct explanation of Statement I. This means that the reason for the copious snowfall in the Kullu Valley during winter is the moisture-bearing wind from the Western Disturbances.

Overall, Option 1 implies that both statements are true, and the occurrence of snowfall in the Kullu Valley during winter can be attributed to the moisture-bearing winds from the Western Disturbances.