of course choosing the safe and legit crypto market, you can choose it at coinmarketcap.com
My classmates asked that question and the professor kept on talking about the probability of getting scammed but he's really against the whole crypto-currency movement so his opinion is biased.
So...here I am, asking for guidance...
professors may not have experience about crypto, and labeling all crypto is fraud, this is a shameful act that I heard, I suggest to investigate before giving a stamp without sufficient knowledge