Always wear a helmet when riding a bike because riding without one is stupid. which revision exhibits the best word choice for the underlined portion of the sentence? riding without one is dangerous and reckless. riding without one is insane and regrettable. riding without one is an uninformed choice. riding without one is not right for you.

riding without one is dangerous and reckless.

Explanation: The choice of the words "dangerous" and "reckless" manages to convey the same meanings implied in "stupid" (most importantly, the danger) without using offensive words. "Insane and regrettable" is too extreme and less informative, while "an uninformed choice" and "not right for you" are downright vague.

free time is when all my homework and chores have been done for the day and i am "free" to do things that i enjoy doing.

usually i spend time watching television. as my favorite tv shows come on at specific times, i make sure that i finish my homework and chores well before the shows. otherwise i will have to miss them. mostly i manage to watch the shows but sometimes extra homework or chores may cause me to miss a show or two, but it is rare. anyhow if i know that i am definitely not able to catch a show in time, i will just set the video recorder to tape the show sothe evening when the weather is fine, i sometimes go for a stroll around the neighborhood with my friends. this is the time when most the neighbors have come home from work or school. we say hello to those whom we know. they are mostly friendly people and they acknowledge our greetings. once in a while we come upon unfriendly neighbors but we just ignore them and carry on. that i can watch it later.