Question

the text states that, at one point, people would trade an ounce of salt for an ounce of gold. this is how salt got the name
a \trade gold.\
b \white gold.\
c \ounce gold.\
d \point gold.\

Explanation:

Salt is white in color and was traded at a value equivalent to gold (an ounce of salt for an ounce of gold). The term "white gold" logically connects the white color of salt and its gold - like value in trade. Option A's "trade gold" is not a typical name for salt. Option C's "ounce gold" focuses on the ounce measurement rather than a descriptive name for salt. Option D's "point gold" has no logical connection to salt's properties or trade value.

Answer:

B. "white gold."