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
Answer:
It is one of the popular hiking destinations in Nepal for its rich wildlife and splendid environment. Godawari is also famous for its botanical garden. "Phulchowki" is located in Godawari which is the highest peak in kathmandu valley. 500 species of plants can be found in the various gardens. Godawari peak flowering seasons in the garden fall in spring and in autumn.
