Answer: Goldman Sachs
Explanation:
If all shares rose by 5% in the value, the biggest contributor to the S&P 500 's upward movement would be the one with the highest weight from the listed options.
From the options listed, Apple has a weight of 4.955 , General Electric is not listed, Exxon Mobil has a weight of 2.1417 and Goldman Sachs has a weight of 5.1177.
Goldman Sachs has the largest weight and so would contribute the most.