The correct answer is option 'D' - Punjab-Haryana Plains.

The Punjab-Haryana Plains, also known as the Northern Plains, receive rainfall from both the Bay of Bengal branch and Arabian Sea branch of the Summer Monsoon. This region is located in the northwestern part of India and covers parts of Punjab, Haryana, and northern Rajasthan.

The Summer Monsoon is a seasonal wind system that brings heavy rainfall to the Indian subcontinent. It is divided into two branches - the Bay of Bengal branch and the Arabian Sea branch. The Bay of Bengal branch brings rainfall to the eastern coast of India, including the West Coastal Plain, while the Arabian Sea branch brings rainfall to the western coast of India, including the West Coastal Plain and the Deccan Plateau.

However, the Punjab-Haryana Plains are located in the interior part of the country and are not directly influenced by either coast. Instead, they receive rainfall from both branches of the monsoon due to their geographical location and the convergence of the two branches over this region.

The convergence of the Bay of Bengal branch and the Arabian Sea branch creates a low-pressure area over the Punjab-Haryana Plains, which attracts moisture-laden winds from both sides. These winds bring rainfall to the region during the summer monsoon season.

This convergence zone over the Punjab-Haryana Plains is known as the monsoon trough. It is an important factor in determining the distribution and intensity of rainfall in northern India. The monsoon trough tends to shift northwards or southwards depending on the prevailing weather conditions, leading to variations in rainfall patterns over the region.

In addition to the monsoon rainfall, the Punjab-Haryana Plains also receive some rainfall during the winter months from western disturbances, which are extratropical weather systems originating from the Mediterranean region and moving eastwards. These disturbances bring precipitation to the region, contributing to its overall rainfall.

Overall, the Punjab-Haryana Plains receive rainfall from both the Bay of Bengal and Arabian Sea branches of the Summer Monsoon due to their geographical location and the convergence of the two branches over this region. This makes it an important agricultural region in India, known for its fertile soil and agricultural productivity.

D