Concept:Probability of an event = total number of possible outcomesnumber of favourable outcomes.Solution:Letters of HAPPY: H, A, P, P, Y. Each of the 5 letters is equally likely to be picked, so total outcomes =5.Favourable outcomes (letter P): the word has two P's, so favourable outcomes =2.P(P)=52Key point: Count each P separately; counting P only once would give 51 (option A), which is wrong.Answer:Option C (52)