Correct Answer - Option 2 : Only assumption II is implicit
As the statement does not mention the advices given by A to anyone else other than B, it is not possible to assume that A has a habit of advising people.
Therefore, assumption I is not implicit.
However, since A is offering an advice on how to travel from Mumbai to Goa via the shortest route, it can be assumed that B is thinking of travelling to Goa. A person with critical thinking does not give advice on travelling to a person who he/she knows isn't interested in it.
Therefore, assumption II is implicit.
Hence, only assumption II is implicit.