What Does It Mean to Conduct a Sequential Search

What does it mean to conduct a sequential search?

A) To search for jobs even when employed.
B) To accept a job offer from an employer, but then to still search for a better job offer.
C) To accept the first job that one is offered.
D) To apply to all job openings.
E) To determine an asking wage and then accept the first job offer that pays a wage equal to or greater than the asking wage.