Answer: D) Do you recognize ideas you've run across in other sources
or A but I say D
Explanation: because D is like you have already read over and spotted something interesting, but A seems accurate too.
The answer is A. Fossils have been found by the local science club. Since the verb, found, is being done to the subject, fossils, it is in the passive voice. The others are in the active voice since the action is being done by the subject.
I think it's B, but I can't guarantee it... Sorry