Answer:
The evidence in the paragraph 2 that best supports the interference that native animals cannot always compete with exotic pets released into their area is that it is not possible that all animals that eve live have enough food in their entire lifetimes. They might be lacking in eatables like fruits and nuts for which they have to compete with other animals of different kinds.
The exotic pets are definitely to be kept more lavishly as compared to the native animals which are not so hard to take care of.