Explanation:

The correct option is (A) Bharal. The Bharal, scientifically known as *Pseudois nayaur*, is commonly referred to as the Himalayan blue sheep. It is native to the high-altitude regions of the Himalayas, including Ladakh, and is well-adapted to its rugged, mountainous habitat. Option (B) Urial (*Ovis vignei*) is a wild sheep species but is not known as the blue sheep. Option (C) Goral (*Naemorhedus* species) and Option (D) Serow (*Capricornis* species) are goat-antelopes, distinct from sheep, and do not fit the description of the Himalayan blue sheep.