The OA and OE are hardly convincing. A is not the only one in which the ‘located behind the ear’ is separated by parenthesis. Even in C and E, they are set off by commas. The OE should explain what is wrong with C and E.
If the OE claims the B is a run-on, it is an awful blunder. A run-on is one that does not connect two independent sentences with a proper conjunction or punctuation. What punctuation or conjunction is missing in B
The modifier ‘
located behind the ear’ does not categorically mean what it is modifying. There lurking doubt is that by leaving it naked, it may also modify the injury
Use of
a smoking habit gives the feeling that the injury can stop one of a kind of several smoking habits; In contrast,
the habit of smoking is all the way a better and more specific expression.
This is why I feel that E is the best of the lot, with its modifier ‘the one’ specifically referring to the part of the brain located behind the ear
Part of the brain is not the subject in this case, but it is the injury. Becos, the part of the brain is not stopping the habit of smoking. It is the injury that is stopping .