The correct answer is option 'D' which states that the North-South Corridor connects Srinagar and Kanyakumari. Let's understand the reasoning behind this answer in detail.

Introduction:
The North-South Corridor is a proposed transportation route that aims to connect the northernmost part of India to the southernmost part. It is a major infrastructure project that seeks to improve connectivity and promote economic development in the country. The corridor will pass through several states, connecting various cities and towns along the way.

Understanding the options:
To determine the correct answer, let's analyze each option:

a) Amritsar and Tuticorin: Amritsar is located in the northern part of India, while Tuticorin is situated in the southern part. While both cities are important, they are not connected by the North-South Corridor. Hence, option 'a' is incorrect.

b) Srinagar and Tiruvananthapuram: Srinagar is the capital city of Jammu and Kashmir, located in the northernmost part of India. Tiruvananthapuram, on the other hand, is the capital city of Kerala, situated in the southern part. Although these two cities are connected by the corridor, the option mentioned Tiruvananthapuram instead of Kanyakumari. Hence, option 'b' is incorrect.

c) Srinagar and Tuticorin: Srinagar and Tuticorin are both important cities in India, but they are not connected by the North-South Corridor. Therefore, option 'c' is incorrect.

d) Srinagar and Kanyakumari: Srinagar, located in Jammu and Kashmir, is the northernmost part of India, while Kanyakumari, situated in Tamil Nadu, is the southernmost part of the country. These two extreme locations are indeed connected by the North-South Corridor. Hence, option 'd' is correct.

Conclusion:
In conclusion, the two extreme locations connected by the North-South Corridor are Srinagar and Kanyakumari. This transportation route aims to improve connectivity and promote economic development between the northernmost and southernmost parts of India.

Extreme Locations Connected by the North-South Corridor:
The North-South Corridor in India connects two extreme locations, which are:
Srinagar:
- Located in the northernmost part of India, in the state of Jammu and Kashmir.
- Known for its scenic beauty and historical significance.
- Srinagar is a popular tourist destination, famous for its beautiful lakes, gardens, and houseboats.
- It is the summer capital of Jammu and Kashmir.
Kanyakumari:
- Located in the southernmost part of India, in the state of Tamil Nadu.
- Also known as Cape Comorin.
- It is the meeting point of the Arabian Sea, the Bay of Bengal, and the Indian Ocean.
- Kanyakumari is famous for its stunning sunrise and sunset views.
- The Vivekananda Rock Memorial and the Thiruvalluvar Statue are major tourist attractions in Kanyakumari.
Thus, the North-South Corridor connects the extreme locations of Srinagar in the north and Kanyakumari in the south of India.