Although mrs. petrides usually sits passively in a motionless stupor, she sometimes repetitiously shakes her head or waves her arms. she most likely suffers from

Catatonia

Catatonia is an abnormal behavior and movement condition that occurs due to disturbed mental state. This condition may be characterized with resistance to passive movement and repeated overactivity. The symptoms of catatonia include stupor, waxy flexibility, posturing and lack of verbal response. For the question given above, Mrs. Petrides most likely suffers from Catatonia.

typically, most spiders possess eight eyes. however, others have as many as 12, and some don't have any. these eyes are for detecting light from dark, deciphering shapes and for gathering their prey.