Translation occurs in the?

Question

exons, introns, nucleus, or none of the three mentioned.



I know it is the ribosomes but unfamiliar with exons and introns.

Answer 1

A bit of confusion in your question.

Exons and Introns are concept associated with mRNA processing after transcription and before translation. Basically, introns are these portions of the gene which are not coding, and when the DNA is transcribed into RNA (in the nucleus), the introns are also included. These need to be removed before translation - the mRNA processing and maturation happen in the cytoplasm.
Translation also happen in the cytoplasm, but it is normally associated with the RER (rough endoplasmatic reticulum), which is a complex of membranes rich in ribosomes. The ribosomes are the machines that make translation from mRNA into protein happen.

Answer 2

translation occurs in the cytoplasm using the ribosomes, so it is none of the above.