What is result of scientists having studied the plesiosaurs

Hello. You forgot to enter the answer options. The options are:

The people who claim to have seen Nessie can be proven to have been dishonest.

The sightings have decreased rapidly since the studies were released.

We can conclusively rule out the existence of modern plesiosaurs.

We know enough to rule out a plesiosaur as a likely Nessie creature.

We know enough to rule out a plesiosaur as a likely Nessie creature.

Explanation:

Studies of plesiosaurs have allowed scientists to define what kind of creatures these are and what dangers they can pose to humans. With these studies, the cinetistas realized that the plesiosaurs are marine reptiles, mostly harmless, being impossible that they were, or, were related to a Nessie creature.

c) problem and solution

yeah uhm looks pretty good lol