Answer:
B. They will attract one another
Step-by-step explanation:
When two pieces of silk that have acquired an electric charge are brought close together, they will either attract or repel each other, depending on the nature of the charges.
If the two pieces of silk have the same type of charge (both positive or both negative), they will repel each other. This is because like charges repel each other.
On the other hand, if the two pieces of silk have opposite charges (one positive and one negative), they will attract each other. This is because opposite charges attract each other.
Therefore, the answer is B. They will attract one another if they have opposite charges, and they will repel each other if they have the same charge.