Read the following sentence from the passage "A Gift of Admiration."

What they may not know is that creating the statue took many years and effort to complete.

How should the sentence be revised to create a more formal tone?
A.

To many the creation of the statue was not known because it took many years and much effort to complete.
B.

What many do not know, is that creating the statue took many years and much effort to complete.
C.

Not known by them, is that the creation of the statue took lots of years and much effort to complete.
D
.

Creating the statue, many do not know that it took many years and much effort to complete.

B. What many do not know, is that creating the statue took many years and much effort to complete.

To many, the creation of the statue was not known because it took many years and much effort to complete.

To create a more formal tone, the sentence should be revised as follows:

B. What many do not know is that the creation of the statue took many years and much effort to complete.