Concept:The stress pattern indicates which syllable receives the main emphasis when a word is spoken.
Explanation:Check the stressed syllable in each word.
A. colonel is pronounced KER-nul, so the stress is on the first syllable.
B. routine is pronounced roo-TEEN, so the stress is on the second syllable.
C. connive is pronounced kuh-NIVE, so the stress is on the second syllable.
D. balloon is pronounced buh-LOON, so the stress is on the second syllable.
Options B, C, and D share the same stress pattern.
Only colonel stands out because its stress falls on the first syllable, not the second.
Answer:A. colonel