Which of the following are uses of biosensors?
1. Monitoring diseases in humans.
2. Detecting pollution levels in the environment.
3. Discovering and identifying drugs and their presence in the human body.
4. Detecting microorganisms that cause diseases.
Select the correct answer using the code given below:
1
1, 2, and 3 only
2
2 and 4 only
3
1, 3, and 4 only
4
1, 2, 3, and 4