Question

a precious metal is
a. an element with super and electric and thermal conductivity, high luster, and sensitivity.
b. a highly sought after dense, shiny, soft precious metal that has been used as money for many centuries.
c. an highly valuable element with super and electric and thermal conductivity, high luster, and sensitivity.
d. a soft, sensitive, and lustrous element with the highest conductivity of any element.
please select the best answer from the choices provided
o a
o b
o c
o d

Explanation:

Precious metals are typically defined as highly valuable elements with properties like high conductivity and luster. Option b is circular (defines "precious metal" as a "precious metal"). Options a and c have grammatical issues, but c explicitly mentions "highly valuable," a key trait. Option d focuses on "highest conductivity," not a universal property of all precious metals. Among the choices, c is the most accurate.

Answer:

C. an highly valuable element with super and electric and thermal conductivity, high luster, and sensitivity.