In the photograph above, the technician is 
a.  removing the compressor magnetic clutch.   
b.  adjusting the compressor magnetic clutch air gap.
c.  removing the compressor.   
d.  adjusting the compressor belt tension. 

The answer is minor seventh

After spending all that time on the research then by all means modify the hypothesis or aim by reporting such. for example the findings did not bring forth what was expected but brought about different yet interesting findings worth exploring so the hypothesis is changed to reflect this new findings.

i may be way off but.