What is the purpose of module 3 in the series 'Aprender a Investigar'?

Identify the basic techniques for collecting information required for research work.
Distinguish the design rules to which they are subject.
Present basic elements so that, depending on the type of research, the program faced and the strategy conceived to solve it, that is, with the driving hypothesis of the work, the techniques that best suit those requirements can be used.
a) Only I is correct.
b) I and II are correct.
c) I, II, and III are correct.
d) II and III are correct.