Answer:
first check the data
Explanation:
if 15 year data shows loss or less grades or anything related then u need to do hardwork and change it if it shows positive or profit or hood grades or anything related u don't need to panic and not relax but do more practise or hardwork to get more or be stable on it. and if it is mixed then my friend u need to do hardwork here as hardwork is the key to succes.in less grades one u need to practice a lot
in good hrades u need to keep it the same or increase only a little and in mixed u need to do hardwork accordingly.
