Stress results only from life or death situations

Fletcher used to really enjoy visiting his friend Digby's house when he was a kid. Digby's house always smelt of gingerbread. 10 years later, Fletcher walks into a bakery and smells gingerbread. He feels happiness. In this example, before conditioning, what is the neutral stimulus ?

a. Visiting Digby's house b. Gingerbread smell c. Visiting Bakery d. Fletcher himself

Olfaction refers to our sense of:

a. taste b. smell c. balance d. movement