The correct answer is (a) Dal Lake.
The Garden of Five Senses is a botanical garden located in Srinagar, Jammu and Kashmir, India. It is spread over an area of 10 acres (4.0 ha) and is divided into five sections, each representing one of the five senses. The garden was designed by landscape architect Balbir Singh and was opened to the public in 1998.
The Garden of Five Senses is a popular tourist destination and is known for its beautiful flowers, trees, and plants. It is also a popular spot for weddings and other social events.
The other options are incorrect because:
(b) Mehrauli is a town in the southern part of Delhi, India. It is one of the oldest surviving towns in Delhi and is home to many historical monuments, including the Qutub Minar.
(c) Silent Valley is a national park located in the Western Ghats of Kerala, India. It is one of the few remaining undisturbed tropical rainforests in India and is home to a variety of plant and animal life.
(d) Ooty is a hill station in the Nilgiri Hills of Tamil Nadu, India. It is a popular tourist destination and is known for its cool climate, tea plantations, and scenic views.