The most likely explanation why the hiring authority is not using contractors or temporary instructors is a, The hiring authority thinks that full-time hires are more productive.
If a hiring authority feels that full time hires are better at their jobs and more productive, they will hire more of them.
This would lead to temporary workers and contractors being used for projects less.
Find out more on full time work at https://brainly.com/question/16905571
#SPJ1