Seeing as he is frustrated with them, and frustration is commonly associated with headaches, he would like feel C. Headache.
Answer:Pedometer
Explanation:bc it counts how much steps you took but also shows how much your heart is beating
For this answer I would go with D. Retinalogic. It is not a vitamin.
1) They indicate basic body functioning
2) It is appropriate to begin physical assessment by obtaining this data
3) Provide basis for problem solving
4) Enables identification of nursing diagnoses to implement planned interventions and to evaluate success when vital signs have returned to normal values.