A given atom has a nucleus containing six protons and eight neutrons. It also has six electrons orbiting the nucleus. What element is this atom?

A)
Boron
B)
Hydrogen
C)
Oxygen
D)
Carbon

we know number of protons in an atom of an element = it's atomic number

here number number of protons in Anton = 6 = ATOMIC NUMBER

recall, which element has Atomic number as 6 ?! Absolutely it's Carbon ! so the correct answer Option D ! { Carbon-14,

Carbon-14 (or 14C) contains six protons, eight neutrons, and six electrons; its atomic mass is 14 amu (six protons and eight neutrons) }

that is wrong, its not thymus.