Question

in selecting the joining process, one consideration relates to the ___, such as whether the parts are made out of a standard metal or an exotic alloy.
(a) quality requirements
(b) appearance of the finished product
(c) materials to be joined
(d) size of the parts to be joined

Explanation:

The text mentions considering if parts are standard metal or alloy, which relates to materials.

Answer:

C. materials to be joined