Final answer:
A 6x19 classification wire rope means each strand is composed of 19 wires, so the answer is D. 19.
Step-by-step explanation:
In the wire rope industry, a 6x19 classification of wire rope means that there are typically 6 strands wound around a core, and each strand is made up of 19 wires. Therefore, the correct answer to the question, 'A wire rope that is a 6x19 classification could have how many wires per strand?' is D. 19.