linda as consumer will not buy enough of the product sale in the market unless the produck undertakes substantialselling andpromotion buy the company who sell it. what marketing concept has been describe in the sistuation​

We can't see it. we won't be able to you out.

  i think you forgot to put the options but if your reffering to this question then your answer will be "b"  a. add "to" to the base form to create an adjective.b. when the subject of a sentence is singular, add "–s" to the base form.c. add "–ed" to irregular base forms to form the past participle.d. do not use a base form with plural subjects