Fast! : ) which line from the text shows that the plesiosaur theory is unlikely?
of all the mysteries in the world, none has been as popular as that of the loch ness monster.
the loch, or lake, is known for sightings of a mysterious monster.
first, the plesiosaur is an air breather.
with cell phones and digital cameras, one would think that sightings of nessie would increase.

englsand

explanation:

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.