Subanta
Unlike the southern United States, where golfers can usually enjoy fair weather year round, the snow in the northern United States limits golf generally to the non-winter months.
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this sentence tests parallelism.
Let's understand the meaning first:
Southern US is different from Northern US.
in Southern US, golfers can usually enjoy fair weather year round
in Northern US, the snow limits golf generally to the non-winter months.
Ok, so we need to compare either S to N, or weather in S with weather in N.
A Unlike the southern United States, where golfers can usually enjoy fair weather year round, the snow in the northern United States
this one compares S with the weather in N. incorrect.
B Unlike the fair weather golfers can usually enjoy year round in the southern United States, the snow in the northern U.S.
this one compares weather in S with weather in N - looks good.
C Unlike the southern United States, where golfers can usually enjoy fair weather year round, the northern United States’ snow
this one compares S with snow in N. incorrect.
D Unlike the fair weather’s golfers can usually enjoy year round in the southern United States, the snow in the northern U.S.
fair weather's golfers - oh my god, what is this? B looks much better than this one.
E Unlike the golfers in the southern United States that can usually enjoy fair weather year round, the snow in the northern United States
compares golfers with the snow. moreover, pronoun that is used to modify golfers. it is incorrect. to modify people, we need who/whom/whose. thus, incorrect.
B so far is the best answer.