One of the key disadvantages of buying fitness equipment is a. privacy b. flexibility c. maintenance d. choice

Ans: Option C(Maintenance).

Considering all the choices, I believe the main disadvantage of buying fitness equipment is its maintenance. Indeed you will have privacy as you can do fitness exercises using that equipment indoors in your home; you will also flexibility because you can do fitness exercises whenever you want; you will also have a choice to workout when you choose, but if your equipment breaks, you will have to repair it or even buy a new one, which can be expensive as well as the cumbersome activity to do.

-i

Olfactory epithelium i believe