Sarah has a backache due to overexertion. she believes a massage would loosen her back muscles and make her feel better. she is concerned because a massage, unlike a pair of shoes, cannot be felt before she buys it. sarah realizes massages have properties.

intangibles properties

Explanation:

Goods and services may be characterized by their tangibility or intangibility. Tangible products are physical products that the consumer can see, feel, try on, for example shoes. In contrast, untouchable products are those that do not have a physical form, so consumers cannot test their quality beforehand. For example, a massage, a hairdressing service, a dermatological treatment and other various types of services.

disorders of the brain include both behavior disorders and other psychiatric illnesses. the primary difference between a behavior disorder and another type of psychiatric disorder is the presence of choice. psychiatric conditions are considered to be involuntary while in behavior disorders, choices are essential.