Trondheim,Norway Is Located at Approximately 63° N

Multiple Choice

Trondheim,Norway is located at approximately 63° N.Despite its high latitude,it has a relatively moderate annual temperature regime.What likely accounts for this moderation?

A) Trondheim's high degree of continentality.
B) Trondheim's maritime location.
C) The urban heat island of Trondheim.
D) Thick cloud cover in Trondheim traps in longwave radiation.
E) Influence of the subpolar low pressure system.