Choose the word that differs from the other three in the position of the main stress in the following question

Choose the word that differs from the other three in the position of the main stress in the following question.

1. A. essay                   B. classmate              C. project                D. report

2.A. performance       B. energy                   C. celebrate             D. sightseeing

3. A. ferry                  B. explain                 C. postcard                D. swimsuit

4. A. essay                 B. solar                      C. ferry                       D. explain

5. A. happy                B. replace                  C. panel                     D. castle

6. A. power                B. thirty                      C. easy                        D. thirteen

7. A. frequent           B. solar                     C. although                D. swimsuit

8 A. vegetarian         B. historian               C. Mongolian            D. magician