Arrange the following words in a meaningful sequence :
1. Infection
2. Consultation
3. Doctor
4. Treatment
5. Recovery

1. Infection, 2. Consultation, 3. Doctor, 4. Treatment, 5. Recovery
Logic: The sequence of events in a medical process.

Infection → This happens first.
Consultation → The patient consults the doctor.
Doctor → The doctor examines the patient.
Treatment → The patient receives treatment.
Recovery → The patient recovers.

So, the correct sequence is 1, 2, 3, 4, 5.

Thus, the correct answer is (d).