Hi, Aida!
Please know that this question is somewhat subject to interpretation--someone's "main idea" takeaway from this passage may be a little different than another person's.
That being said, we can start to pinpoint the main idea by looking at the information each sentence reveals.
If you want to work as an emergency medical technician, you must get the proper training. This sentence tells us that emergency medical technicians require specialized training.
You must be able to think clearly under pressure. Here, we learn that good emergency medical technicians can stay focused and attentive even in extreme circumstances.
It’s also important to be able to remain calm in stressful situations. Finally, we learn that good emergency medical technicians stay calm even when they are surrounded by chaos.
Altogether, we have learned that emergency medical technicians:
- require specialized training
- stay focused and attentive in extreme circumstances
- stay calm no matter the situation
Therefore, we can say that the implied main theme is that emergency medical technicians must have certain knowledge and abilities to be successful in their work, namely training, the ability to think clearly under pressure, and the ability to stay calm in the face of stress.
I hope this helps!
Aida N.
Thankyou very much!04/19/21