1. if under the age of 16 find consent from parents, if over 16 make sure they sign a consent form
2. if the participant needs to be deceived during experiment make sure to debrief them after
3. always put participants physical, mental and emotionally health first
4. make sure they are aware of that they can withdraw from the study at any point before publishing
Answer:
The tread on the road declined sharply till in the 13th century,when the conquests of the Mongols ushered in an era of frequent and extended contacts between East and West...
With less cost,harassment and danger,many goods and materials that the Silk Road could not transfer were conveyed through the sea route.
Answer:
I would say the correct answer is D, but C would be my next best guess.
Explanation:
