In less than a page, explain why you think each of the following is or is not ethical.
a. Keeping quiet about a possible environmental hazard you've just discovered in your company's processing plant
b. Overselling the benefits of instant messaging to your company's managers; they never seem to understand the benefits of technology, so you believe it's the only way to convince them to make the right choice
c. Telling an associate and close friend that she needs to pay more attention to her work responsibilities or management will fire her
d. Recommending the purchase of excess equipment to use up your allocated funds before the end of the fiscal year so that your budget won't be cut next year