Stamp collecting being a hobby that is sometimes used in the schools to teach economics and social studies. a. being a hobby that is b. is a hobby because it is c. which is a hobby d. is a hobby

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 .

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.