Choose A, B, C, or D for the correct answer.

The following text is for questions 14 to 17.

Let's make our mask to avoid us from covid-19.

Things we need:

• 100% cotton material or a man's cotton handkerchief, clean
• Two rubber bands, clean

Steps:
1. Fold the handkerchief from one side to little above the middle of the cloth. 
2. Fold over the other edge to go above the first fold. 
3. Fold this again evenly from the middle.
4. Take a rubber band and tie it on the left side of the cloth, 5-7 centimeters from the edge. 
5. Now, tie the other side with another rubber band. Ensure that the area in the middle of the two rubber bands is big enough to cover our mouth and nose. 
6. Take one edge of the cloth on the side of the rubber band and fold over it. Do this for both sides. 
7. Now, take one fold and insert it to the other fold. Our mask is ready to use. Make sure that our mask is clean before using. 

Adopted from: The Office of the Principal Scientific Advisor to the Government of India, March 30, 2020.

The text is about how to ....