As per the India State of Forest Report 2021, which one of the following Himalayan states has the highest percentage of its geographical area under forest?

According to the India State of Forest Report (ISFR) 2021, among the Himalayan states listed, Arunachal Pradesh has the highest percentage of its geographical area under forest cover. Arunachal Pradesh has approximately 79.33% of its geographical area covered by forests, which is among the highest in India. The state's vast forested area is due to its rugged terrain, low population density, and rich biodiversity. Sikkim has around 47.08%, Uttarakhand has about 45.44%, and Himachal Pradesh has approximately 27.72% forest cover. Hence, Arunachal Pradesh leads among the Himalayan states.