Jon is abusing a drug to gain muscle mass. which drug is jon most likely abusing? a) cocaine b) performance-enhancing drugs c) tobacco d)heroin

Explanation:

Performance-enhancing drugs are used to improve physical skills, it's most used by high performance athletes, it's called doping. Among these drugs we have anabolic steroids, androstenedione, human growth hormone, erythropoietin, diuretics, creatine and stimulants. All these products can help gain muscle mass, develop strength and reduce fat, but also they have negative effects.

Basically, the negative effects appears because this drugs are like artificial testosterones, altering the level of hormones within the body. Some of the side effects are:

Therefore, Jon is most likely abusing performance-enhancing drugs.