Select the word from the options that is similar to the given set of words in a certain way.

Bokaro, Bhilai, Rourkela, ?

Given: Bokaro, Bhilai, Rourkela, ?

​Bokaro, Bhilai, Rourkela, all these are city know for its steel plants.

Similarly ​

Durgapur: Known for its steel plant.

Kanpur: Famous for leather and textiles (not related to steel).

Baroda: Known for petrochemicals and engineering, not steel.

Lucknow: Famous for culture and heritage, unrelated to steel.

Thus, correct option is (a).