Answer: Refusal is a skill to restrict or avoid a particular person, situation, and problem.
Negotiation is a discussion between two or more people to reach up to a beneficial outcome.
Conflict resolution can be defined as a solution for argument or disagreement between two or more parties.
Refusal: In one of the college friends party, I refused the offer of consuming alcohol, although my friends insisted me alot.
Negotiation: I negotiated the price of a bike, with the owner, although he was not convinced to sell that in such a low price which I put forward. As I make him realized that I have to make some modifications on it to utilize it better.
Conflict resolution: I sorted out the issue of disagreement between my two colleagues, I allowed them to put forward their problems and helped them to reach a similar conclusion and sorted out the argue.