[Aznhmonglor]

There are at least nineteen (19) isomers of molecular formula C4H8O. DRAW a bond-line structure of the isomer that is chiral, DOES contain a methyl group, is NOT an ether, but is a cyclic compound.

What I've come up with is that it has to be a cyclopropane but have no idea where the methyl group or the -OH group goes. Also chirality involves four bonds to a carbon?

[sjb]

For the purposes of this, then yes, chirality involves four bonds to a carbon. There are more strict definitions along the lines of not being superimposable on a mirror image, but that's less important right now.

You're almost there, as you've identified that you need a cyclopropane, now where can you put a methyl group and the oxygen such that you have 4 *different* groups around a carbon?