Since chlorine and argon are propellant and sulfur is solid. Then the answer is 2) Bromine.
The correct answer would be air
5 is 2 I’m not sure about 4 though....
Answer:


Explanation:
Given



Required
Determine the area
The area of a triangle is :

By substituting values for the x and y coordinates of A, B and C;
We have:

So:
For instance



The area is:






Recycling!! And also planting more trees.
Hope this helps!