Choose the correct comparative: He is ________ than his father. (gentle) MCQ with Answer and Explanation

'Gentle' can take '-er' (gentler) or 'more gentle', both acceptable; but 'gentler' is standard. To be safe, I'll use option 'more gentle' as an alternative. In many exams, they accept both, but will list one. I'll make option A 'gentler', B 'more gentle', and correct answer A because it's the single-word comparative. I'll mention both are possible, but the better form is 'gentler'.