Final answer:
To send an item with significant monetary value, Priority Mail or Certified Mail should be used, as they offer tracking and insurance, with Certified Mail providing additional proof of mailing and delivery. Other options like First Class Mail, Parcel Post, and Standard Mail are less suitable for valuable items.
Step-by-step explanation:
To send an item that has significant 'monetary value', it is recommended to use a class of mail that offers additional security and insurance options. In this case, the best options are either Priority Mail or Certified Mail. Both services provide tracking and insurance, but Certified Mail provides proof of mailing and delivery, with the option for delivery confirmation, which adds an extra level of security for valuable items. It is worth noting that while First Class Mail is a commonly used service for everyday mail, it does not automatically include insurance for valuables. Parcel Post refers to USPS Retail Ground, which is suitable for sending less urgent packages. Standard Mail, now known as USPS Marketing Mail, is not intended for items of significant value as it is generally used for advertisements and promotional materials.
Regarding the additional information provided about Jesse working in the mailroom, he should use the metric unit of mass, such as grams or kilograms, to weigh the package which contains books and documents. This will help to determine the correct postage needed.