Question

question 23
which type of research is the only way to prove cause and effect?
experiment
correlational research
longitudinal studies
archival research

Explanation:

In research methods, an experiment is the only type that can establish cause - and - effect relationships. This is because in an experiment, researchers can manipulate an independent variable while controlling other confounding variables. Correlational research only shows relationships between variables, not causation. Longitudinal studies focus on observing changes over time in a group, and archival research uses existing data, neither of which can prove cause and effect.

Answer:

A. experiment