Which of the following provides the best answer to the interview question, "What motivates you?"

"I'm most motivated when I get along well with my co-workers and enjoy a positive, engaging, and entertaining work environment."
"I'm most motivated when I know that the position I hold is secure and the salary and benefits package offered to me are fair for the job."
"I'm most motivated when I'm in a challenging and positive work environment, no matter the task. I like to be part of something bigger than myself."
"I'm most motivated when working under pressure. As a matter of fact, the more stress I'm under the more likely I am to rise to the occasion."