:
A research company wants to study smokers and nonsmokers to determine whether 10 years of smoking affects lung capacity. Which type of data gathering should be used?

A Survey
B Experimental Study
C Observational Study
D Census

Respuesta :

Answer:  B, experimental study.

Step-by-step explanation: Sorry if the answer is wrong.  I think the type of data gathering that should be used is experimental study because it can show through data if smoking for 10 years affects the lung capacity of individuals.