Part A: Read the sentences from the text.

At that time, the electric light bulb had just been invented, but it created inadequate light. A surgeon asked Perzy to come up with a way to make the light brighter for his operating room.

What is most likely the meaning of the word inadequate?

A.
unclean

B.
expensive

C.
difficult to find

D.
not enough

Part B:
Which phrase from the text best supports your answer in part A?

A.
"electric light bulb"

B.
"just been invented"

C.
"make the light brighter"

D.
"for his operating room"