When your Contrasting multiple objects, your looking for any differences that may or may not be their. Think Compare and Contrast if that helps, The answer to this is A
Boron Group
elements have three valence electrons and are fairly reactive. All of them are solids at room temperature. Boron is a very hard, black metalloid with a high melting point.
B. Hand-eye Coordination because it can be used in multiple activities
Okay so yeah u have to minus then subtract then decide it it’s a method i was taught to do
