you elaborated post in a good way and shared answers of all the questions according to your research but I must want to say that you should go into more depth in all question because your efforts are good but not enough and not according to requirement that's why you should put more effort in it while answering all the questions but over all answers are correct that you tried to explain to us

If I talk about definition of Crypto air drops than I totally agree with you that these are basically free tokens given by a specific project to its users for the encouragement of their support that they are given to the project and for attracting more to traffic towards a specific community or project. You have explained types of Crypto air drops in a good way and I agree with you that there are creation of Crypto air drops at steem also but you should also explain some of the more detail information so there was a need to search on it as you are saying that you don't know about depth of it

I agree with you that there are different ways to check if a Crypto air drop is a scam or not and for searching it is also very important to check if the source from which we are searching about authenticity of Crypto air drop is an authentic source or not. I agree with all advantages and disadvantages that you explained so I wish you success in the engagement challenge