Caribou are wary animals with excellent hearing, so stalking them over the treeless landscape, getting close enough to kill it with nothing but a handheld lance, as Dorset people did, required exceptional hunting skill.
(A) so stalking them over the treeless landscape, getting close enough to kill it
(B) so to stalk them over the treeless landscape and get close enough to kill one
(C) so in order to stalk them over the treeless landscape and get close enough to kill one
(D) and so in order to stalk it over the treeless landscape, getting close enough to kill it
(E) and so stalking them over the treeless landscape and getting close enough in order to kill it
OA is B. I have a very specific question. Does choice B not make the sentence a run-on? Caribou are wary animals with excellent hearing, so to stalk them over the treeless landscape and get close enough to kill one.....
I believe that the two clauses should be separated by a semi-colon. Caribou are wary animals with excellent hearing; so to stalk them over the treeless landscape and get close enough to kill one with nothing but.................
Reference from William Strunk - Elements of Style.
Note that if the second clause is preceded by an adverb, such as accordingly, besides, so, then, therefore, or thus, and not by a conjunction, the semicolon is still required.
I had never been in the place before; so I had difficulty in finding my way about.
In general, however, it is best, in writing, to avoid using so in this manner; there is danger that the writer who uses it at all may use it too often. A simple correction, usually serviceable, is to omit the word so, and begin the first clause with as: