Which of sternberg's three forms of intelligence is sometimes called "street smarts"?

practical

Explanation:

Sternberg argues three types of intelligence, if a person has practical intelligence is called a "street smart".

People showing common sense and practical intelligence  are fit in changing contexts. Sternberg focuses on the process of adapting, shaping to fit oneself to the environment, refering to these persons as "street smart".

The environment changes include weather changes, cultural context, and changes that come with time. A street smart achieves balance between he and his envirnoment rapidly.            

The Battle of Trenton was an important event in the American Revolutionary War because it inspired beleaguered American soldiers to reenlist and encouraged more men to join the fledgling American military. The battle took place on December 26, 1776.