Answer:
a. longitudinal
Explanation:
A longitudinal study examines a given group over a long period of time, so collecting data from the same group of 30 people over their lifetime certainly fits that definition. It's more like an evolution study.
A cross-sectional compares different groups at the same point in time. So, it's more like a survey.
A microgenetic is much focused in time, providing multiple data sets in a short time to examine rapid evolution of a subject.
An experimental study design will make interactions and experiments with the study group, while this is not the case here apparently, and experimental is usually for a much shorter period than a generation.
If the money supply increases and nominal GDP remains the same, then A. price level increases.
<h3>What is Money Supply?</h3>
This refers to the total amount of money that is in circulation in a country that usually increases spending.
Hence, an open market sale by the federal reserve will increase the interest rates because it would increase investment spending because an OMO sale decreases interest rates which make getting loans easier.
M= Money supply
V= Velocity
P- Price level
Y= nominal GDP
Hence, with the increase in the money supply, then there would be an increase in the price supply.
Read more about money supply here:
brainly.com/question/3625390
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Answer:
OK give all the points away
Technology/productivity
Taxes/subsidies
Price expectations
Number of competitors
Input costs