Answer:
Explanation:
The sentences that use apostrophes correctly are:
a) Captain America's shield was made from vibranium.
b) Thanos wanted to use the six Infinity Stones' power to restore balance to the universe.
c) Spiderman's webshooter's seemed to be malfunctioning.
Sentence D is incorrect because "arrows" is already a plural word, so an apostrophe should not be used. The correct sentence would be: "Hawkeye checked to see how many arrows he had left."