The oceanic climate region is best characterized by O high amounts of rainfall.
cool summers and cold winters.
short summers and long winters.
limited vegetation.

cool summers and cold winters.

Explanation:

Oceanic climates are generally characterised by a narrower annual range of temperatures than in other places at a comparable latitude, and generally do not have the extremely dry summers of Mediterranean climates or the hot and wet summers of humid subtropical climates

I hope this was helpfull.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering