Could you rephrase you question to create a clearer understanding .
Its the second one, a valley! Hope this helps :)
Answer:
A] HOWEVER
Explanation:
NORTHERN WINTERS ARE TOO LONG HOWEVER THE SUMMERS ARE NOT LONG ENOUGH
#YOUR ANSWER#
TV show: Stanford Pines
Book: Alex Hirsch and Rob Renzetti
C is the correct answer because when you read the sentences none of them make sense. They are not grammatically correct.