You can use socratic for that
Answer:15
Explanation: you can add 5 three times and u get 15
Answer: The correct answer is Solomon four-group design.
Explanation: The Solomon four-group design is a research design in which the four groups of the research have different experiences,
1- The first group is Pretested,
2- The second group or control group is pretested as well,
3- The third group receives treatment and then is post-tested.
4- The fourth group receives no treatment, is post-tested.
This design is done to acknowledge the influence of pretesting in posttest results.
In conclusion, the research design is experimental and its called Solomon four-group design.
