Robots have been around since the 3rd century BC. At that time, they were mainly invented as toys to amuse the king or emperor.

Now, robots help life on Earth by...

I. gathering information from areas that humans cannot easily study.
II. performing repetitive jobs more quickly and accurately than humans.
III. making it possible for humans to be completely unnecessary in factories and research facilities.
A.
I, II, and III
B.
I and II only
C.
I and III only

B. I and II only  

Explanation:

For example, unmanned space probes can gather information more easily than a human can.

Closer to home, many biochemical research and pharmaceutical industries use pipetting robots for their repetitive pipetting chores.

C is wrong.  Machines can do things faster than any human ever could and not get tired, but humans possess the intelligence, expertise, and skills to use the robots most efficiently and to solve problems when things go wrong.