Which Is an Example of an Internal Stimulus

Multiple Choice

Which is an example of an internal stimulus?

A) You read a memo from your supervisor requesting sales figures for the past five years.
B) While photocopying reports, you overhear two managers talking about upcoming layoffs.
C) Your office is too hot because the air conditioner isn't working properly.
D) You notice an intern pocketing money from the petty cash fund.
E) You dream about an idea for a new commercial to promote your company's product.