Here is the full solution for CraftConnections Day 50. Each group is shown with its difficulty colour and a redundant shape, so it stays readable if you are colour blind.
Classic — Day 50
● Wool Yellow Wool · Blue Wool · White Wool · Green Wool
▲ Ways to get around Chorus Fruit · Powered Rail · Elytra · Activator Rail
◆ Bees pollinate these Chorus Flower · Cornflower · Rose Bush · Oxeye Daisy
★ Piglins will not attack you for holding these Golden Dandelion · Golden Apple · Golden Carrot · Golden Horse Armor