A. Wasn't.. This is because if you seperatevthe contractioninto two words it is was not, this would make the sentence be "Wally was not capable of lifting the heavy box."
If you were to do the same thing with weren't it would sound like "wally were not capable of lifting the heavy box." This does not make sense because "wally" is singular (so is "was not") and "were not" is pleural.
Hope this helps
I’m not sure anyone here has read the book so we can’t answer that lol
Summary by any other name
I am going to say B because it seems most appropriate.
1. went 2. drove 3. arrived, was 4. asked, had 5. said 6. told 7. walked 8. saw 9. stopped, bought 10. is 11. did not go 12. got 13. did, did 14. loved 15. got, had 16. stayed 17. went 18. had 19. was 20. visited 21. were 22. bought 23. saw 24. ate 25. talked 26. returned 27. thought
