Read the sentences. Elephants are complex creatures with sophisticated social habits. Their social habits are evident through their many means of communication. Which sentence should be added next to convey the most precise meaning? A. Elephants can communicate by using body movements, emitting sounds through their trunks, or transmitting seismic pulses through the ground. B. Elephants are nurturing creatures, and they are known to look after their young, sometimes in a group and sometimes individually. C. Elephants are at risk of being hunted in some areas, and there are efforts to preserve and protect their survival in difficult circumstances. D. Elephants in zoos have been shown to be very appreciative of the company of other elephants, and zookeepers try to help with this.