Determine Whether the Following Is Valid or Invalid

question 31

Short Answer

Determine whether the following is valid or invalid:
It's not that Alberto and John will both attend the meeting. I did learn, however, that if either Susan or Allene goes, John plans to go for sure. Therefore, if Alberto goes, it means neither Susan nor Allene is going.

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Definitions:

Poli/o

A prefix related to poliomyelitis, a viral disease affecting the spinal cord and leading to paralysis.

Spondyl/o

A combining form used in medical terms referring to the vertebrae or the spinal column.

Peripheral Nervous System

The part of the nervous system that consists of the nerves and ganglia on the outside of the brain and spinal cord.

Cranial Nerves

Twelve pairs of nerves that emerge directly from the brain and serve head and neck functions.