Answer: C
. The couple worked with a dental pick and an artist’s brush.
Explanation:
Archeologists have to be extremely careful when fossil hunting because they could damage the already fragile fossils if they aren't and if they use heavy machinery.
Because they cannot use machinery and need to be careful, they use equipment like an artist's brush and a dental pick. These things will take a long time to in helping to restore the fossil which is why fossil hunting requires hunting.
Spectator is defined as "a person who watches at a show, game, or other event." This definition is closest to "one who watches," so this is your answer.
