It slooowwwwssss down... the colder the slower.
Bottlenecks: points where tasks accumulate and the process flow is slowed. These should be analyzed and the problem solved. Read more about bottlenecks.
Points of contact with the customer: should always be fully satisfying experiences. Monitor them, as these are the times when the customer “judges” the company.
Determine the value - adding activities: these should be improved the most. Those that do not add value should be stopped.
Answer:
A. Obsidian
Explanation:
It fits the property described in the question.
It cools so fast that no visible crystal or grain could form. It has high silica Composition, black and glassy. It is also used to make tools with sharp edges
