Answer:cross-sectional study
Step-by-step explanation:
This a study that is carried out at one point in time in which a researcher doesn't interfere with variables.
A researcher is able to analyse various traits at one time such as focusing on age, gender, income etc.
It is used to analyse those traits that seem to triumph within a particular population which can be useful is studying recent events within a particular population.
It doesn't work like longitudinal studies which focuses on extended period of studies it focuses on the current situation and why it's happening now at this particular moment. It may provide good information on correlations, like how one factor may affect the other in the same direction.