Internal and external criticism that is used to evaluate middle range

 Making judgement as to whether a theory could be adapted for use in research is very important.  Describe the internal and external criticism that is used to evaluate middle range theories. 

this is a discussion post 

needs to be in: APA 7th edition 

400 words with 2 references 

less than 10 % plagiarism

please i also need 2 discussion replies with citations. thanks