The answer is C as it is the only grammatically correct answer
C) have + been + verb + -ing.
Answer:
to lead
Explanation:
a CONDUCTor LEADs a band. apply that here.
Answer:
PLEASE MARK ME BRAINLIEST !!!
Explanation:
The rationale of your research is the reason for conducting the study. The rationale should answer the need for conducting the said research. It is a very important part of your publication as it justifies the significance and novelty of the study. That is why it is also referred to as the justification of the study.