Certification programs are available at all of the following except:

a. online schools.
b. vocational schools.
c. community colleges.
d. four-year colleges.

There is actually another of this same question on Apex, which has all of those but Four-Year. Just to make sure there isn't to much confusion its:

Certification Programs are offered by all of the following except:

A. Community colleges

B. Vocational schools

C. Online Educators

D. Liberal Arts colleges

If its this variation, then its Liberal Arts Colleges.

Confirmed doing it myself on apex, so I tried to help clear it up since they tend to change answers sometimes. :D

this is an outline for the decisions that frankie is going to make

opportunity cost

willingness to buy

price or quality

of course, there could be many economic strategies that should be considered important while making decision. opportunity cost is the foremost significant factor while considering any economic option. when you buy something, you should know how much you are forgoing for this product. indeed, you could buy something different with this measure if you changed your mind. willingness to buy shows how much surplus you are earning while making a decision. it is important because it shows you buy what you want or you buy because you have only limited amount of money. the price or quality can be considered as a general economic option that we are applying while buying something. when you buy something, price or quality could be one of the options. indeed, they define the characteristics of the product.    

mark brainliest!