Answer: 974
Explanation:
When doing any operation involving significant figures(sig figs) you want to look at number with the lowest amount and use that to round your round your final answer.
91.01 [4 significant digits] * 10.7 [3 significant digits] = 973.807 [6 significant digits]
Since 10.7 has the lowest number of significant figures [3] you need to round your answer to match 3 significant figures.
973.807 [6 significant figures] ⇒ 974 [3 significant figures]
That's it!