Which is not true of the southern colonies? grew rice and tobaccohad large farms called plantations    many dutch and german settlers lived their  used slave labor

I think it should be The 3rd one. The south did farm tobacco, so I know it cant be that, and they did use slave labor more than the North, and the farm were called plantations. That leaves only the Dutch and German settlers.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

its c not d   tell me if that´s correct