Answer:
A grammar term that refers to a material or substance from which things are made such as silver, gold, iron, cotton, diamond and plastic.
Explanation:
C. a textbook because they used a primary source to make the textbook and they could have left information out or slightly altered some events.
B) The speech that the computer science expert gave regarding online data mining was filled with information and was also very entertaining
Yes. that answer is correct. A+
