Is it more beneficial to utilize renewable or non renewable resources and why ?

Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

Could someone me find the answer to this problem.

When using the scientist method, which step comes last?