Which structure is not part of the tegmentum?

According to the article Love Makes the World Go ‘Round about male and female sexual psychology, Buss and colleagues studied people in:

(a) three large American cities (b) America and two Asian countries (c) across Northern Europe (d) small villages in Africa

Gia has her deadline to quit smoking cigarettes set for next Monday. She has notified her friends and family of her plans and is researching nicotine replacement alternatives before the big day arrives. What stage of change is Gia exemplifying?

a) Preparatio b) Preparation c) Contemplation d) Precontemplation