Mikhail is working in an IDE and needs to test a program one step at a time to find and fix errors. What tool should he use?

d e b u g g e r

Explanation:

They are known to be a computer-based program that is usually utilized by for the purpose of testing and debugging a target program. They make use of simulators that are set by instructions to run a program instead of directly running a program on the processors. This enables the programmers to have higher control over the execution of the program and fix any errors in the program.