Its a i think could be wrong tho good luck
They made canals and roads for safer traveling
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.
Gunpowder, paper, printing, and the compass are sometimes called the Four Great Inventions of Ancient China. Kites were first used as a way for the army to signal warnings. Umbrellas were invented for protection from the sun as well as the rain. Chinese doctors knew about certain herbs to help sick people.
No roughhousing, pushing, running, or other horseplay during class or lab. It's too easy for accidents to happen.
Work quietly, and be courteous to others and respectful of their space. Distractions can lead to accidents.
Don't eat, drink, or chew gum during class. You could accidentally ingest chemicals and other harmful substances.
Always wear your safety gear. This may include goggles, lab aprons, gloves, and more.
Let the teacher know if something spills or breaks. That way, you can make sure it's cleaned up properly.
Know where all the classroom exits are located, as well as safety equipment like eyewash stands.
Read all the instructions carefully. In lab, read instructions twice before you begin working.
Never touch anything in the lab until your teacher gives you instructions to do so.
