PLZZZZ HELP ASAP!!! Sharpest pH change

Which one of the titrations will have the sharpest pH change at equivalence point?

a) weak acid and weak base
b) weak acid and strong base
c) strong acid and weak base
d) strong acid and strong base

Answer :

A example it a because titration is weak Suck it greeeeeeeeennnnnn boyyyyyyyyyy

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