What are the advantage and disadvantages involved with collecting payments at time of service

Collecting payments at time of service can reduce the numbers of billing invoices that have to be sent out. It also reduces delinquent payments which leads to numerous reminders and eventual collection procedures.

Psychological disorder. transgender disorder

(a) is not correct because one does not get increased cholesterol  from lifting weights.(b) is not correct because lifting weights cannot reduce the risk of a hereditary disease.(c) is not correct because back pain isn't a benefit! and plus, if he lifts weights properly, he should not have back pain.(d) is the correct answer because his ligaments will gain mass, making it easier for him to carry heavier weights and he will also be stronger!