The employer isn't really interested in what you are looking for: they are interested in what they are looking for. Fit your answer to their needs and focus on the benefits you can bring to the organisation.
Emphasise your best subjects and highlights of your studies. If grades were average, talk about leadership or jobs you took to finance your education.
Show you have gone further than just reading their website. Mention what you have read about them in the media; talk about products, services, history and people, especially any friends that work there.
You don't want actual names, so this question does not violate attorney-client privilege. What you want to find out is whether the average client is an individual or a business and whether the average job resembles what you need done, both in terms of the legal matters being covered and, when applicable, the dollars involved. If you have a big estate and fear lawsuits, so that you want to set up an asset-protection trust, you don't want to be working with an advisor whose idea of asset-protection is an ordinary estate plan and protecting life savings from Uncle Sam. You're looking for someone who can make you virtually "suit-proof," and the difference is huge.
This should be straightforward. Reflect positively on your current employer but state how you are looking for more challenges, responsibility, experience and a change of environment. Explain how your current role can no longer provide you with these things, but how you believe the role on offer presents an opportunity for growth that will make full use of your strengths and potential.
Be honest: this will allow your enthusiasm to come across. This is also a chance to demonstrate the research you have done about the company.
Show what motivates you. Explain why this sector appeals to you and use any work experience you might have to back this up.
Again, this answer should reflect company values, for example, by showing that you are a team player.
You're the one paying the bill, and you want to get what you pay for. If the lawyer uses paralegals or junior partners to do the work, you should find out just how involved your attorney intends to be. It's dumb to pay for a figurehead. You also want to find out what, if anything, the involvement of others does to your projected costs; it can push costs up or keep them reasonable, depending on circumstances.
The interviewer is trying to find out your definition of ‘difficult' and whether you can show a logical approach to problem solving. Select a tough work situation that was not caused by you. Explain the way you approached the problem, including the actions you took and the solution you applied to overcome the problem. Give your answer with the air of someone who takes setbacks and frustrations in your stride, as part of the job.