Final answer:
Christina's situation of being laid off during the recession and struggling to find a suitable job is characteristic of frictional unemployment.
Step-by-step explanation:
Christina's situation is characteristic of the frictional unemployment that occurs when people move between jobs in a dynamic economy. After being laid off during the recession, she moved back to her parents' home in California and has been searching for a suitable job since. This is a common scenario during economic downturns when people may struggle to find new employment opportunities and experience temporary unemployment.