The correct option is A tag along
Option B: 'Tag along' means 'to go along with someone, accompany someone'. The meaning is relevant to the conversation. It means that the person, Babita, may accompany Amit to the factory outlets that she suggested to him.
Hence option B is correct.
Option A: 'Walk along' means 'to walk beside something on foot'. The meaning made is not quite clear in this conversation. The dialogue does not refer to a specific road that Babita 'may walk on'.
Hence option A is incorrect.
Option C: 'Jump along' literally means 'to jump in a horizontal direction'. This sounds vague, and hence, isn't a suitable option.
Option D: Similarly, 'hop along' isn't an expression that is used frequently. It literally means 'to hop towards a direction'. Hence option D is incorrect.