Geography

The Black Sea is bordered by six countries: Bulgaria, Georgia, Romania, Russia, Turkey, and Ukraine. Moldova does not have a coastline on the Black Sea, so it is not counted as a bordering country. Therefore, the correct number of countries bordering the Black Sea is six, making option C the correct answer.

The Sahara Desert is the largest hot desert in the world and is commonly recognized as the largest desert overall after Antarctica and the Arctic, which are cold deserts. Among the options given, Sahara Desert is the largest.

Blackpool is a well-known seaport and seaside resort located in England, famous for its beaches and tourism.

The Wakhan Corridor is a narrow strip of territory in northeastern Afghanistan that connects Afghanistan to China. It lies between Tajikistan to the north and Pakistan to the south, but it does not directly connect Pakistan and Tajikistan. Therefore, among the given options, none correctly describe the Wakhan Corridor's connections. The corridor connects Afghanistan to China, separating Tajikistan and Pakistan geographically, but does not connect Pakistan and Tajikistan directly.

A landlocked country is one that is completely surrounded by land and has no coastline along an ocean or sea. Therefore, option A correctly defines a landlocked country.

Changa Manga is a large man-made forest located near Kasur, Punjab, Pakistan, not in Lahore, Karachi, or Sialkot. Therefore, the correct answer is 'None of these'.

K-2, the second highest mountain in the world, is located in Gilgit-Baltistan (GB) region of Pakistan. This makes option C the correct answer.

Mount Everest is locally known as 'Sagarmatha' in Nepal. This is the Nepali name for the world's highest peak, making option B correct.

Murree is known as one of the rainiest places in Pakistan due to its location in the hilly region of the Himalayas, which receives heavy rainfall especially during the monsoon season. Karachi and Lahore have comparatively drier climates.

Sir Creek is important to Pakistan primarily because it is a disputed boundary area between Pakistan and India, affecting territorial waters and maritime rights. It does not separate Rajasthan from Sindh, nor is it mainly known for environmental protection or drainage of LBOD water. Therefore, none of the given options accurately describe its importance.