your or their

English as a Second Language English Vocabulary, Grammar and Idioms
1

1 Growing your own vegetables also, of course, saves many people a lot of money.
2 Growing their own vegetables also, of course, saves many people a lot of money.
3 Growing their own vegetables also, of course, save many people a lot of money.

Is “your” possible to be substituted with “their”? Does it then ask for “save” instead of “saves”? Thanks

2

It’s possible to say 'growing your own vegetables - but then you should also say ‘saves you a lot of money’.