Answer:
b. outcome fairness
Explanation:
Based on the information provided within the question it seems that Kayla is likely to contend there is a lack of outcome fairness. This term refers to the degree to which an outcome meets the standards that are met. Which is why Kayla is dissatisfied, since the salary increase should always be the same and follow a standard, which is not the case in this scenario since Bob's increase was 3% more.