Answer:
b. rightward shift of aggregate demand and a leftward shift of aggregate supply.
Explanation:
The U.S. experience of strong economic growth, full employment, and price stability in the late 1990s and early 2000s can be explained by a rightward shift of aggregate demand and a rightward shift of aggregate supply.
The threat to validity that is likely to occur in the scenario above is Selection Bias.
<h3>What is Selection Bias?</h3>
This occurs when a researcher has control and intentionally chooses those who are going to be researched, observed, or studied. To eliminate this bias, the scientist must ensure that the sample population is selected very randomly.
Other threats to validity are:
- History
- Maturation
- Attrition
- Social Interaction
- Instrumentation
- Testing
- Regression to the mean, etc.
Please see the link below for more about Threat to Validity:
brainly.com/question/4168290
Answer 2 is the correct answer.
The nervous system divisions which are activating the response of heartbeat quickening are:
- Autonomic
- Sympathetic
- Peripheral
<h3>What is the Nervous System?</h3>
This refers to the central command center of the human body which coordinates movement, responds to stimuli among many other functions.
With this in mind, we can see that the nervous system divisions which are responsible for the heartbeat rate increase for Salman are the autonomic, sympathetic and peripheral nervous systems as they help to coordinate communication across the body.
Read more about nervous system here:
brainly.com/question/837202
The collection and collation of original data via direct contact with potential or existing customers. It is also called field research.
