Which altcoins do you think will see year 2020 with prosperity and why they will survive?
I think following will be there
1) Ripple / because of its application in banking use
2) Ether / because its smart contracts and scripting functionality
3) Dash / Instant send and private send
For me I go for ETH, BCH, XRP and LTC since these coins are the top four altcoins in CoinMarketCap. I think as time approaches on to 2020 those list may change since there are a lot of altcoins available on the market that may surpasses to those coins listed above. I am not an expert in predicting but I just give a try and those are my chosen altcoins to survive by 2020.