In the listening material, the professor argues against what is said in the passage that fossils being sold to private ownership are unfortunate. The professor thinks that it is exaggerated.
First of all, the fossils can be opposed to the public, which contradicts the meanings in the passage. Private collectors provide so many chances for purchase and even low level public institutions can buy one. So fossils can be displayed to the public.
In addition, scientists lose access to find critical discovery according to the passage. The professor reckons it unrealistic. Any fossil would be identified by scientist before they are regarded valuable. And detailed information about critical discovery will be found by scientists. So scientists will miss anything if the fossils are owned by personal collectors.
Finally, the passage says that private collectors often destroy evidence with fossils; however, the professor argues against it in the listening material. And she thinks that fossils would go under discovered if scientists only pay the attention to the location and surroundings of the fossils. It is better for scientists to find out more fossils.
In conclusion, the professor disagrees with the arguments in the passage with three reasons.