Here are the words with different stress patterns:

1. A. mushroom (The correct answer is B. demand because the stress pattern is different.)


2. A. entertain (The correct answer is B. communicate because the stress pattern is different.)


3. A. children (The correct answer is C. professor because the stress pattern is different.)


4. A. opinion (The correct answer is D. tunnel because the stress pattern is different.)


5. A. operate (The correct answer is D. relax because the stress pattern is different.)