Answer:
Some things to consider: safety, Money, and specific muscles you want to work.
Explanation:
Free weights cost less money. People have used free weights on a weight bench and have not used a spotter. The free weights have fallen on them and killed them. A universal machine is more expensive. You can not drop a universal machine on yourself. The machine's aslo require little to no maintenance. A machine will basically always hit certain muscles, not due to you but down to how the machine is made. However free weights allow you to hit a larger variety of muscles as it's not isolated.
the esophagus connects and transports food from the pharynx to the stomach
(pharynx is close to mouth, so id say mouth to stomach.)
B because I checked a BMI scale