I tried doing it by MATH strategy but failed to get the right response. I was successful in eliminating C,D and E.

How i applied Math Strategy (steps)

Unfortunately = -ve (contrast)

“damaging attacks on the ramification” = he doesn’t support the change → NO SUPPORT = -ve thing

Therefore using math strategy, we get “+ve” in the blank, ie SUPPORT → hence i feel supplement was the answer, but I am wrong . Please help me out . I cant do apply grammar strategy therefore i use math strategy.