Answer:
cross - sectional study
Step-by-step explanation:
A cross - sectional study -
It involves the study by using many sources and data for a specific time period , is known as a cross - sectional study .
- Some characteristics of a cross - sectional study are as follows -
- Data iis taken for a single point of time .
- There should not be any type of manipulations
- Many factors are considered like race , income age etc. .
- It is capable to provide the information of the current .
The example of a cross - sectional study is , data for the people suffering from cancer .
Hence , Greta is also performing a cross - sectional study .