Some people argue that developers should not be involved in testing their own code but all testing should be the responsibility of a separate team. Give arguments for and against testing by the developers themselves.

People code in their own styles which can make it hard for other people to understand it, especially if it doesn't have any documentation, but that could be a reason to let a separate team test it, so the developer can learn how to code in a way that is understood by most people.

Explanation:

answer; its the top layer;