The correct answer is: a) Chennai and Kanyakumari.
The Grand Southern Trunk (GST) Road is a historic national highway connecting Chennai and Kanyakumari. It is one of the longest national highways in India, with a total length of 1,360 kilometers. The highway was built in the early 19th century and was originally known as the Grand Trunk Road. It was renamed the GST Road in the 1950s.
The GST Road passes through the states of Tamil Nadu, Kerala, and Puducherry. It is a major transportation artery and connects several important cities, including Chennai, Madurai, Coimbatore, Trichy, Thanjavur, Madurai, and Kanyakumari.
The GST Road is a four-lane highway for most of its length. It is a well-maintained highway and is a popular choice for both locals and tourists.
Option b) Chennai and Kolkata is incorrect because the Grand Southern Trunk Road does not connect these two cities. The Grand Southern Trunk Road connects Chennai and Kanyakumari, while the Grand Trunk Road connects Kolkata and Delhi.
Option c) Madurai and Coimbatore is incorrect because the Grand Southern Trunk Road does not connect these two cities. The Grand Southern Trunk Road connects Chennai and Kanyakumari, while the Madurai-Coimbatore Highway connects Madurai and Coimbatore.
Option d) Trichy and Thanjavur is incorrect because the Grand Southern Trunk Road does not connect these two cities. The Grand Southern Trunk Road connects Chennai and Kanyakumari, while the Trichy-Thanjavur Highway connects Trichy and Thanjavur.