Which of the following sentences contains at least one error?
a) The proposal included a preliminary budget and all relocation expenses associated with the project.
b) The proposed storage facility will not start construction until a final decision is made on the current facility.
c) Kelly felt unpreparred for her presentation but soon discovered that the detailed notes within the slideshow serve as a back-up
d) A number of businesses are failin
g to take advantage of the available tax credits that are available to them.