Comparison of Degree

The roads of Chittagong are wider ––.

Option C is correct because 'than' is used in comparisons and 'those of' is used to compare the roads of Dhaka with the roads of Chittagong. The other options use 'then' which is incorrect in this context, or they lack 'those of' which makes the comparison unclear.

Comparison of Degree টপিকের ওপরে পরীক্ষা দাও