Sarah has a master's degree in disaster relief but hasn't found work in her field. In the last year, she worked as an Uber driver for several months, then sold honey at a farmer's market, and then found three months' work on a temporary contract with a local publishing company. Sarah is not working full-time in her field; rather, she is underemployed in the:

gig economy

Explanation:

Sarah is not working full time as in a permanent job. She is doing short term contract jobs which are temporary jobs often known as freelance jobs. Underemployed here means Sarah is not being underpaid or not having enough paid jobs and not making full use of all her skills. For example she has worked as an uber driver and a farmer which isn't what she studied and therefore not really making full use of her skills and being underpaid for someone who has a Master's degree

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.

answer; reliable;