Gerunds are words that are formed with verbs but act as nouns. Gerunds also at times are seen to end in 'ing'. In this particular sentence, the word in the blank acts as a noun thus becoming the subject of the sentence and also like a verb by taking up the object. This means that in the blank, we would need a gerund.
Laughed is in the past tense and it does not act as a noun. This eliminates options A, C and E.
Laugh is in the present tense and it does not act as a noun too. This eliminates Option D
Laughing is the gerund among all the options given. Option B can be the correct answer.
Gone is in the past tense and go is in the present tense. Both are wrong options as they do not act as nouns. Option A, C and D are eliminated
Going is the gerund.
Option B is the correct answer