Explanation:

Correct Option is -3

The erroneous part is 'Sumanth is going'
In the given sentence, the usage of 'is going' is incorrect instead of this we need to use 'goes'
• According to grammar, whenever we need to use the usual actions that we do regularly then we need to use the present simple tense. In the given, sentence, the present continuous tense is used which is incorrect.
Hence, the correct sentence is- Sumanth goes to school by the school bus every day.