Divisions Between Each Type of Economy Are Not Static, but Fluctuate

Multiple Choice

Divisions between each type of economy are not static, but fluctuate according to significance. Babysitting is a prime example. What babysitting description would describe the communal economy?

A) Hire a regular caregiver, record all transactions, report and pay annual taxes.
B) Apply for government-provided childcare, which requires proof of tax payments.
C) Hire a teenager to be paid an agreed sum and do not report the transaction.
D) Ask a neighbor with the unspoken understanding that they will return the favor.