Right answer is (b) electrophilic catalysis
The best I can explain: In most of the enzymatic reaction protons are involved. General and specific acid-base catalysis are types on acid-base catalysis. Nucleophilic catalysis involves donation of electrons from nucleophilic active site residues to a substrate forming a covalent adduct transition state intermediate. Whereas, electrophilic catalysis involves covalent intermediate transition state formation between the cationic electrophilic group in the enzyme and the electron rich portion of the substrate.