Which sentence could be added to the passage as a specific supporting detail? a) zoos also provide great research facilities. b) the panda's favorite food is the bamboo shoot. eliminate c) you can reach the zoo in sydney, australia by ferry. d) the greeks and romans had a variety of interesting hobbies.

The complete question goes like this :
 Almost every major city in the world has a zoo. Humans have kept and enjoyed animals since the prehistoric times. Ancient Greeks and Romans kept small zoos. Over the past fifty years, zoos have changed remarkably. Today zoos provide the animals with larger and more natural habitats.
Which sentence could be added to the passage as a supporting detail?

The correct answer is A)Zoos also provide great research facilities
This sentence is adding more information directly related to the state of the zoo in modern times. Besides the educational and entertaining purposes, the zoos are now becoming important centres for research and places for developing conservation strategies for endangered animals. All of the other sentences are not relevant to the importance and characteristic of modern-day zoos. 

Aneutral atom must have the same number of neutrons and protons? no, they must have the same number of protons and electrons