Answer:
markets research is necessary because market research provides you with the essential information about your competitors and existing products. ... Market research helps reduce risk by allowing you to determine product features, pricing and promotions from the outset. It also helps you focus resources where they will be most effective.
It talks about the factory more than anything
B: The emergency <em>lights</em> atop the fire trucks <em>were</em> flashing. Lights is your noun and were acts like your verb.
for A it should be: The exhibits on the lower level are not currently open to the public.
for C it should be: That man, wearing sunglasses, seems to be an undercover police officer.
for D it should be: Perry, like his younger sister Pauline, writes very neatly.
Hopefully this helped and good luck.
