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.
Buck is a good leader and had good similar leadership qualities like his predecessor.
This is because he made sure everything was in order. He also showed that he had the strength and was a good motivator of the people. He was able to persevere different conditions while leading the group of people.
