Question

scenario 3: the distance tiny droplets (aerosols) from one person’s breath can travel was measured using masks made from different material. this test was also repeated with the person not wearing a mask. iv: dv: cons:

Explanation:

The independent variable (IV) is the type of mask material (or no - mask). This is what the researcher changes. The dependent variable (DV) is the distance the tiny droplets (aerosols) can travel, which is what is being measured. Constants (Cons) could include the person breathing, the environmental conditions like temperature, humidity and air - flow during the test, and the volume and force of the breath.

Answer:

IV: Type of mask material (or no - mask)
DV: Distance tiny droplets can travel
Cons: Person breathing, environmental conditions, volume and force of breath