Which of the following is NOT a precaution to take when shopping online? Select one: A. Avoid making online transactions on a public computer. B. When placing an order, make sure you receive a confirmation number. C. Shop at well-known, reputable sites. D. Pay with a debit card, not a credit card.

Petra contracted to paint bret’s house for $2,000. after beginning the job, petra realizes that the house is really quite big, and she’s not going to make enough profit, so she tells bret she wants another $500 to finish the job. bret doesn’t want to pay more, but he’s afraid that if she walks off the job, he’ll have trouble finding someone else to finish it, so he agrees. is bret legally obligated to pay the extra $500?