In this case the answer B is correct; Iron.
Metalworkers in ancient India were renowned for their skills in creating different types of objects that were of very pure quality and the highest standards. These of course were not that common and not just anyone could obtain or afford such items.
B and C I think
A voters poll tax
A required literacy test
Thomas Paine made this statement to:
C. convince people to support the independence movement.
This article was made in support of the Revolutionary War, he wouldn't have gone with A or B. Native Americans did not have an important side in this argument. D is also incorrect because even though he did imply this, it is not the topic.
<span>Phototropism and auxin makes plants move toward the sunlight.</span>
