Which port was developed to relieve the pressure of Chennai port?

Tuticorin port

The correct answer is Option (2) → Tuticorin port

Ennore, a newly developed port in Tamil Nadu, has been constructed 25 km north of Chennai to relieve the pressure at Chennai port.

Tuticorin Port was also developed to relieve the pressure of Chennai port. It deals with a variety of cargo, including coal, salt, food grains, edible oils, sugar, chemicals and petroleum products.