Answer:
Cobalt Sources
Cobalt-60 is used as a radiation source in many common industrial applications, such as in leveling devices and thickness gauges. It is also used for radiation therapy in hospitals. Accidental exposures may occur as the result of loss or improper disposal of medical and industrial radiation sources.
Explanation:
The answer would be D. because when an acid and base mix the start to cancel each other out causing it to neutralize
B because acetic acid is a weak acid and large quantity means you make it become concentrated