Answer:
D. is a hobby
Explanation:
According to my research on the English language, I can say that based on the information provided within the question the correct statement for this question would be "is a hobby". Therefore the whole correct sentence would be "Stamp collecting is a hobby sometimes used in the schools to teach economics and social studies."
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
Joan of arc grew up in small town in France. I think
Answer: Those who studied alone were exposed to the CONTROL condition.
Explanation: In an experiment, there are usually 2 conditions.
1.) The Natural condition
2.) The controlled condition
In this case, the controlled condition, the researcher is testing one person at a time as against testing with a group of people. This is to ensure that the researcher can adjust the conditions of the other experiment by studying just one person at a time.
Answer: Your Welcome Hope this helps :D
Explanation:
Territory north of the sacred 36°30' line was now open to popular sovereignty. The North was outraged. The Kansas-Nebraska act made it possible for the Kansas and Nebraska territories (shown in orange) to open to slavery.
