Brain Sentry is starting a firm in the small industry that helps football teams discern whether a player has suffered a concussion. This industry is still so new that no standard operating procedures have been developed. The industry Brain Sentry is entering is an example of a(n) industry.

Emerging  

Explanation:

Emerging industries are the injustices that are reconstructed by industries in a way to make them come into view of public.People get to know about new industries as per their modification requirement and condition. They don't have well established regulation and guideline for function.

According to the question, Brain Sentry is type of emerging industry because it is newly appearing industries for the modification the environment requires in the field of perceiving injury caused to football players.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

the vibration from the sound waves messed with the glass and it shattered.

hope this .