Lessening the potential negative consequences of behavior, such as replacing the cement surface of a playground with a springier, softer surface, is called:

Lessening the potential negative consequences of behavior, such as replacing the cement surface of a playground with a springier, softer surface, is called harm reduction.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

united kingdom

portugal

france

germany