dismiss

comment is both a compound noun and verb. as a noun, the stress would be on the first syllable and for a verb, the stress would be on the second syllable. since it wasnt specified in the question as a verb, that means it is a noun. it would be stressed thus: COMment

words with prefix always have their stress on the second syllable. Dismiss, intact and confuse all have prefixes and would be stressed on the second sylle as:

disMISS

inTACT

conFUSE