First aid

Symptoms of respiratory arrest include:

  1. unconsciousness
  2. apnea
  3. bluish lips
  4. all of the alternatives are correctCorrect answer!

Explanation

The correct answer is option 4 (all of the alternatives are correct). This question assesses First aid; this alternative directly meets the conditions in the prompt and the road-safety rules. The other alternatives broaden, narrow, or depart from the stated conditions and therefore should not be selected. Under the current rule, the difficulty is 2 on a scale from 1 to 5.

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First aid