What are some things that should be checked before blood is transfused

You should always confirm that the needles are new, clean, and sterilized, make sure the blood you're putting in the patient has no diseases and is the right blood type, and make sure that the doctor has a qualified degree.

I hope this helps, and have a nice day!

the correct answer is 4 (giveaways to the public)

something that is given away or gave out for free. an occasion at which things are given away to free. something that is evident or obvious; something that uncovers a mystery.

it could be be in a form of a lucky draw as well. these the company events gather more audience for their pr and it also increases their ratings as well. this is a way to attract more customers towards themselves.