Read the following passage and mark the letter A, B, C or D to indicate the option that best fits each of the numbered blanks from 18 to 22.

A major shift in employment patterns has emerged worldwide. In recent years, the gig economy, which includes freelancers, part-time workers, and short-term contracts, (18) _____. Many people, who prefer flexibility to traditional full-time jobs, now choose to work as drivers, designers, writers, or delivery workers. This trend has grown so rapidly that many companies have already hired gig workers instead of permanent staff to reduce costs and increase efficiency. There are several reasons for this shift. Gig work allows individuals to choose their own hours, work from different locations, and have greater control over their schedules. (19) _____. Platforms that connect workers with clients make it easier for people to access short-term jobs online, even without formal qualifications or prior experience.
However, the gig economy, (20) _____, often results in a lack of job security and essential benefits. In many cases, they are paid only when they work and do not receive the same legal protection as full-time employees. (21)
_____. As this form of employment continues to expand globally, issues such as fair pay, regulation, and worker protection have become central to public debate.
The gig economy is clearly reshaping how people engage with work. (22) _____. These systems should support gig workers, protect their rights, and ensure fair compensation through transparent policies and responsible digital platforms.
(Adapted from https://sciencedirect.com)