(1) one morning in february 2009, the staff at the santa monica pier aquarium arrived to find the place flooded with more than 200 gallons of spilled saltwater. (2) the one responsible for the mess was not a human, but a foot-long, two-spotted california octopus, calmly watching from her tank. (3) evidently, this octopus had pushed and nudged until she released a valve near the top of her tank, spilling all the water. (4) luckily, the staff got there in time to save any sea creatures from harm. (5) tara crow is the aquarium's public programs manager. (6) she is quoted as saying the whole thing was actually pretty funny, though it took many hours to clean. (7) in the future, the curious octopus likely won't be able to repeat such a stunt. (8) aquarium staff has made sure there are extra clamps and tape securing the lid of her tank.
which sentence could best be added before sentence 3?
(3) evidently, this octopus had pushed and nudged until she released a valve near the top of her tank, spilling all the water.
a. intelligence and curiosity are hallmark traits of octopuses.
b. octopuses pull water into their mantle cavity, passing it through the gills.
c. this species feeds on snails, clams, mussels, and small crabs.
d. two-spotted octopuses generally live to be about 2 years old.