Which of the following landmarks is found on the posterior surface of the scapula?

The spine

Explanation:

In the study of animal anatomy,a  landmark is a major point on the body that has biological significance. An anatomical landmark is a biologically-meaningful point in an organism.;these landmarks are used for the definition of corresponding anatomical points within species.

Posterior, describes a region that is at the back of the body.

i think the answer is

mass