Arule that guarantees the solution to a problem when it is correctly applied is termed a(n)

The correct answer is algorithm. 
An algorithm is a set of rules which needs to be followed exactly as prescribed in order to achieve perfect results every time. The term is usually used when it comes to computers and technology, but it can be applied to 'real life' as well, describing rules which are fool-proof when it comes to solving a problem. 

This question is an opinionated one, and we don’t know anything about the module or anything, thus we can not answer it. but if you are having trouble on what it is asking basically it is just asking to (using your knowledge on the topic) say which topics you were most interested and which were the most challenging.hope this : p