$\frac{30}{0\mathrm{.}5}$ points

How does the level of complexity of a job affect the validity of general mental ability $($GMA$)$ tests?

There is no apparent relationship between job complexity and validity of GMA tests.

Validity is lowest at the medium level of complexity.

$$ The higher the level of complexity, the lower the validity

The higher the level of complexity, the higher the validity.

Validity is highest at the medium level of complexity.