Digoxin should not be administered if heart rate:

Correct option is A

Digoxin slows the heart rate; administering it when the pulse is below 60 bpm may cause bradycardia and other complications. Explanation of options:
· (a) ✔ Withhold Digoxin if HR <60 bpm.
· (b) ✘ Safe HR to administer the drug.
· (c) ✘ 80 bpm is above threshold.
· (d) ✘ No restriction if HR is >80.