Which line from the text shows that the plesiosaur theory is unlikely? (5 points) 1) Of all the mysteries in the world, none has been as popular as that of the Loch Ness Monster. 2) The loch, or lake, is known for sightings of a mysterious monster. 3) First, the plesiosaur is an air breather. 4) With cell phones and digital cameras, one would think that sightings of Nessie would increase.