Bobby has recurrent, intense sexually arousing fantasies, urges, and behaviors involving the use of some inanimate object or a part of the body not typically found erotic. Bobby most likely would be diagnosed with

Fetishistic disorder.

Explanation:

Fetishistic disorder: In abnormal psychology, the term "fetishistic disorder" is described as an individual's tendency to experience intense and recurrent "sexual arousal" by using either specific type of inanimate object or particular attention on any "non-genital" body part or parts that often leads to developing functional impairment or significant distress.

Symptom: Anxiety, guilt, depression, etc.

As per the question, the statement represents the "fetishistic disorder".

they encountered severe weather for which they were poorly prepared.

answer; genetics;