Answer:
1 - B - It is faster than a human.
2 - C - 64%
Explanation:
1 - The sole purpose of introducing robots in working fields is to get benefits from their capabilities. They can do processes faster than any human. Sushi robots has the ability to make 300 sushi's in an hour where a human can make 40 or 50 in the same time (Fact taken from NY Times article).
2- Since you haven't mentioned the year, so i would give you the current year's answer. Services sector contributes 64% to the US Economy.