The detective had a lot of corporeal evidence to sort through, unfortunately the bulk of it would prove to be what?\nOptions:\n- intangible\n- spiritual\n- transparent\n- ethereal\n- insubstantial
Let's be accurate as possible and think first.
insubstantial
Insubstantial means not being sufficient.

When a corporeal evidence is unfortunate that means it is not sufficient.

.

Final answer: insubstantial