Choose the option that best completes the following sentence.

Submitted by api on Mon, 03/24/2025 - 19:19
Point
1.00
Question Text

Scientists have spent years ______________ information about UFOs.

Quiz Section
Section 2
Position
8.00
Question Type
Multiple Choice
Master uuid
bdf47574-6b9c-49af-9ba1-9dc309069efc
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