Final answer:
The government helping single mothers pay for expenses is considered a transfer payment. Therefore, the correct option is A.
Step-by-step explanation:
The following option would be considered transfer payments by the government:
a. The government helps single mothers pay for expenses.
Transfer payments are payments made by the government to individuals or groups without the expectation of a direct good or service in return. In this case, the government is providing financial assistance to single mothers to help them with their expenses. Transfer payments like this allow individuals to participate in the economy and support their well-being.