In the united states, the most widely recognized marker of entry into adulthood is:

a. getting married
b. holding a more or less permanent, full-time job
c. moving into one's own home
d. having a child.

Option: b. holding a more or less permanent, full-time job.

Explanation:

In the United States, teenagers or people with 20s enter into adulthood when they became the permanent holder of full-time jobs. Permanent jobs in America is not easy to find because most of the companies hesitate to hire a permanent employee. In America, one out of three gets a permanent job. As people get jobs, they no longer depend on their parents for any support and consider to be old enough to take decisions.

no questions on whether they are allowed that right