I don't agree with some of the answers. BTW, how can you say which one is the 'correct' answer? There's no such thing as any answer can be correct in all these situation. If the question is 'What is the capital of Inida?' then you can say New Delhi as the correct answer. It is ridiculous to suggest any answer as correct answer here. Being honest will always pays and I am sure the interviewer appreciates it.
Q1. There are 100s of companies and every company is not a market leader.
I will go with answer 3 with slight changes. 'I am looking for a change and I felt that I am best suited for this position'
Q2. What do you think are your weaknesses?
What if the candidate is being interviewed for the position of software programmer?
I will tell them if I have any weakness or I will go with answer 3
