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 B

I read in Kaplan Verbal that "one" can refer to only "one" as the antecedent. So why is the option not following this rule? Or is the rule incorrect?

Kaplan says that the following sentence is wrong

A person should leave light on in an empty house if one wants to give impression that someone is at home------Kaplan says this construction is wrong.

Because of this rule i was not able to see any answer choice as correct? Please let me know is this rule correct or am i wrong somewhere?

Also i did the following

d) and e) use ", and so" incorrcetly....... only ",so" is sufficient and doesn't create a run-on .Also in these options we need plural pronouns as "animals" is plural

a) "it" in-correct

b) and c)rejected by the above rule......!