Explanations:Understanding the geographical distribution of lowlands in Pakistan requires an examination of the country's topography and the influence of its major river systems. The Indus River, one of the most significant rivers in South Asia, plays a crucial role in shaping the landscape of Pakistan. The river originates in the Tibetan Plateau and flows through the northern part of the country before entering the plains of Punjab and Sindh.
The Indus River and its tributaries, such as the Chenab, Ravi, Beas, and Sutlej, have created vast alluvial plains in Punjab and Sindh. These plains are characterized by flat terrain and are highly fertile, making them ideal for agriculture. The lowlands in these regions are a result of the sediment deposited by the rivers over thousands of years, leading to the formation of rich agricultural lands.
On the other hand, the provinces of Balochistan and Khyber Pakhtunkhwa (KPK) are predominantly mountainous and hilly. Balochistan is known for its rugged terrain, including the Makran coast and the central highlands, while KPK is characterized by the Himalayan and Hindu Kush mountain ranges. These regions do not have extensive lowland areas like those found in Punjab and Sindh.
Therefore, the correct answer is that the lowlands in Pakistan are primarily located in Punjab and Sindh. This distribution is a result of the geological and hydrological processes that have shaped the landscape over time, with the Indus River system playing a central role in the formation of these fertile plains.