Well answering something is one of many things you might do.
vote
Lacrosse Luge Lawn Darts
Navigating
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You can calculate, carve, catch, charge, cheer, choose, clean, compete or concentrate. They start with the letter C.
The activities that start with the letter "J" would include juggling, jump roping, jumping, jamming and jousting.
kyaking
zippingzoomingzoology
Some five letter words that start with K are:kabobkapokkaputkayakkazookhakiknavekneelknifeknockkrill
paint and tip
tabulatetalktastetangotelephonethinkthrowtickletranscribetranslatetransporttraveltugtutortype
Some fruits that start with the letter N are:nectarinesnaval orangesnaranjillo