Which of the following signs is least likely to indicate a traumatic brain injury?
a. low blood pressure
b. irrational behavior
c. irregular breathing pattern
d. vomiting

Low blood pressure.

Explanation:

Brain is one of the most important organs of the body as it coordinates the other system of the body. The brain injury affects the body's homeostasis and affects the nervous system of body.

The brain injury can cause the breathing pattern as the brain is involved in controlling the respiratory system of the organisms. The vomiting and rational behavior also gets damaged as these action are controlled by the brain. The blood pressure remains unaffected by the brain injury.

Thus, the answer is option (A).

Vomiting

Explanation:

Vomiting is not an indication of the traumatic brain injury. Vomiting can be because of any medical conditions such as any problem in the stomach, any discomfort in the esophagus, and certain other medical conditions.

The problems like low blood pressure, irrational behavior, and irregular breathing patterns, are some of the characteristics shown by the people who has gone through brain injury.

Hence, the correct answer is option D  

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