Mark the letter A, B, C or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions

Here are the answers indicating the word that differs from the other three in the position of primary stress:

4. D. athletic
5. C. emission
6. C. difficult
7. A. healthy
8. B. instrument
9. C. karting
10. C. interested

These words have different primary stress patterns compared to the other options in their respective groups.