Ans: D
a. Watson-Felix model is a cost estimation model similar to cost estimation model which says Effort, E= 5.2 (KLOC) 0.91
b Quick fix model: A software maintenance approach in which we wait till problem occurs and fix it as quickly as possible
c. Putnam resource allocation model is used for effort estimation for a project and is used while planning a project. This model gives the famous relation effort α 1/time 4
d. A Logarithmic Poisson Execution Time Model for Software Reliability Measurement