Would you expect to find the humid transitional zones on the coast or inland? Northern or Southern part of California?

Answer 1

How does your text define humid transitional zone?

Answer 2

it does not. that's why i am stuck

Answer 3

I could only find one reference.

http://www.usna.usda.gov/Gardens/faqs/turfgrassfaq2.html

As you can see, it doesn't seem to pertain to your question. I suggest you ask your teacher about this question.