Zero and First Conditional examples. All choices are grammatically correct.

Zero Conditional for something that is a general truth. You can use 'if' + present tense + present tense. For example.....

If you let other people talk at the meeting, you yourself won't be able to speak.

If there is a business meeting, more than one person talks or listens!

If I invest my money with you, I might lose it all.

If you get it done in time, we'll give you the job.

Zero conditional for something that was true but is no longer a fact. Use the past tense. For example.....

I think that if I invested my money with you, I would lose it all.

If I had invested my money with you, I would have lost it all.

When I was little, if I helped in the shop, they gave me pocket money.

Zero conditional: to talk about something that is a fact. Use present tense + 'if' + present tense.

Today is Friday if yesterday was Thursday.

First conditional: to talk about something that is a probable future result. Use 'if' + present tense + 'will/won't' + verb.

If today is Friday, tomorrow is Saturday.

First conditional: to talk about something that is a probable future result. Use will/won't +verb + 'if' + present tense.

I would have lost all my money if I had invested it with you.

First conditional: we can use 'might, could' or 'may' instead of 'will' to suggest that something is less probable.

If I invest my money, I might lose it all.

I may have lost it all, if I had invested my money.

I wouldn't have any money if I spent it all.