Lola, age 75, believes her memory is fading with age, and the anxiety this causes her actually diminishes her memory. This is an example of

Apolitical machine ~ apex 

The answer is b) there are men trying to marry his wife

Alow-density territory was created by kodric-brown and brown which is done by removing half the flowers and comparing them to high-density, unmanipulated territories. it is created because of their eagerness and wants to explore on how reducing territory quality would affect foraging behavior.