If you want the least amount of risk with potentially 20% gain, I'd go with bitcoins. or maybe some Ripples
Investing that dollars in bitcoin is much better and not 20% but he will earn a large amount of profit if he do not spend them early and hold them for longer time at least for 1 year.
I think the bitcoin is a good investment for the long time. That has been proved in the past 6 years.
You are right in the last 6 years we can noticed that bitcoin has passed its journey so strongly and is not becoming more stronger and will be a very good currency for the future so if someone will want to trust on bitcoin for longer time then he will be very happy in the future.
Good thing if you can hold longer because there's a benefit in holding your bitcoins. Take notice that the price has increase more than a 100% for this year, and that is already a great development so far which is something we should consider that the future of bitcoin is great and so as with our investment.
well just make sure to maximize your profits making yourself busy chasing how to grow your btc while holding it as your investment if you can take some time to read inside the forum you will find more ways just some example would be alt trading knowing what would be the possibility of an alt projet and put part of your btc investment inside it will make you some good profits too.
Exactly, you can find relevant information here in the this forum which you can use with your investment. Also, you have to study carefully by verifying the suggestions of the people here and not just follow it blindly, remember it's your money is at risk and not them.