Answer:
Without doubt
Explanation:
The fills in the gap best
The information on this starts from 2nd Armored Division (Inactive) The 1st Armored Division—nicknamed "Old Ironsides"—is a combined arms division of the United States Army. The division is part of III Corps, with its base of operations in Fort Bliss in El Paso, Texas. It was the first armored division of the U.S. Army to see battle in World War II.
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