As(44) archaeologists often begin their analysis when they return with the artifacts to a safe place, such as a laboratory. material culture provides archaeologists and historians with information about the site and the people who once lived there. when they're done analyzing artifacts, archaeologists usually publish their findings; allowing others to(45) learn from what they found.

refer to number 44 in the passage and choose the best response below.
a.) no change
b.) when
c.) while
d.) omit the underlined portion.

the first word "as" is underlined