Study habits can help change the future by either helping or ruining things. one example is non-stop study that helps by remembering a lot more. another thing is studying with your friends it might be a good idea but you can get destacted easily and not learn anything
I think is is the second one
The most often used application of the term virtuosity applies to music - a virtuosic piece, a virtuosic musician etc. Thus the answer to this is b. Virtuosity means extreme technical proficiency in an area of music (though it can be applied to other things as well to show mastery of a skill - a virtuosic painter etc.)
