The client diagnosed with anemia is taking an iron tablet. Which assessment data indicates the medication is effective? 1. The client denies night blindness. 2. The client has not had a cold this...

The client diagnosed with anemia is taking an iron tablet. Which assessment data indicates the medication is effective?

1. The client denies night blindness.

2. The client has not had a cold this winter.

3. The client’s potassium level is 4.5 mEq/L.

4. The client’s hemoglobin is 12