Answer:
Safety can be defined as the control of recognized hazards to achieve an acceptable level of risk.
First aid is the first and foremost treatment given to the victim of sudden accident or injury.
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Explanation:
The answer is D. Environmental
Cerebrospinal fluid (CSF), clear, colourless liquid that fills and surrounds the brain and the spinal cord and provides a mechanical barrier against shock. Formed primarily in the ventricles of the brain, the cerebrospinal fluid supports the brain and provides lubrication between surrounding bones and the brain and spinal cord. When an individual suffers a head injury, the fluid acts as a cushion, dulling the force by distributing its impact. The fluid helps to maintain pressure within the cranium at a constant level.
https://www.britannica.com/science/cerebrospinal-fluid
There is RRMS SPMS PPMS and PRMS the least common is PRMS
