Joint attention is the process of:
a) looking at a stimulus within milliseconds of another person looking at the same stimulus.
b) anticipating another person's focus of attention.
c) two people using the same cues to help focus their attention.
d) one person alerting another to a stimulus via nonverbal means, such as gazing or pointing.

In a small, closed economy, national income (gdp) is $350 million for the current year. individuals have spent $100 million on the consumption of goods and services. they have paid a total of $60 million in taxes and the government has spent $75 million on goods and services this year. use this information and the national income identity to answer the questions. how much does the economy spend on investment?