The Answer should be B. Credentials as going by it's definition and all.
Dou(b)t, sold(i)er, diarr(h)oea, i(s)land, (k)now
I believe it is option "D.) The flu vaccine is not reliable enough to be worthwhile"
It would have a negative impact on the economy due to people not spending money to have the flu vaccine.
The answer is D. Pity
Cathy’s love for Linton is just pity. Cathy is physically attracted to Hareton and it quite obvious that Hareton has the same feelings towards Cathy. Hareton even tries to become better as a person and has even become jealous of Linton.