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."
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The answer is 2. Franklin Roosevelt
<span>c. interstate highways :)</span>
The 25th amendment states that if the president dies or is too ill to do his/her job, the vice president must step in and do their job.