Concept:The word with a different stress pattern is the one whose stressed syllable is not in the same position as the others.
Explanation:The stress in each word is on a particular syllable.
In "despite", the stress falls on the second syllable: de-SPITE.
In "petrol", the stress falls on the first syllable: PE-trol.
In "wardrobe", the stress falls on the first syllable: WARD-robe.
In "vomit", the stress falls on the first syllable: VOM-it.
Therefore, three words have first-syllable stress, while only "despite" has second-syllable stress.
So "despite" does not follow the same stress pattern as the other three words.
Answer:A. despite