Question

helium, neon, and argon are examples of
a metals.
b metalloids.
c noble gases.
d transitional metals.

Explanation:

Helium (He), neon (Ne), and argon (Ar) are located in group 18 of the periodic table, which is defined as the noble gas group. These elements have full valence electron shells, making them chemically inert under standard conditions, a key trait of noble gases. They do not fit the definitions of metals, metalloids, or transitional metals.

Answer:

C. noble gases.