Question

I'm going to ride a bike.
1. Okay, but you should wear a healmet.
2. Okay, but you ought to wear a healmet.
3. Okay, but you must wear a healmet.
4. Okay, but you have to wear a healmet.
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#1 is a suitable answer to the statement, I think. If we use other expressions, what difference do we have?

Answer 1

Correct the spelling of "helmet."

All are correct once the spelling is taken care of. You could also write ... you need to ...

Answer 2

Thank you.

I'm going to ride a bike.
1. Okay, but you should wear a helmet.
2. Okay, but you ought to wear a helmet.
3. Okay, but you must wear a helmet.
4. Okay, but you have to wear a helmet.

Answer 3

Correct.

Answer 4

#1 and #2 are the same
#3 and #4 are the same, but stronger than 1 & 2.

Answer 5

Or you could say, you're nuts if you don't wear a helmet.