Today I have a citizenship interview if I pass today and after that I want to go to india can I travel?

You can travel as a permanent resident but your oath ceremony could be scheduled while you are gone. Of course. if you wait and become a US citizen...

Can I file my Green Card application before receiving my approved OPT EAD card?

Your worry is not a problem assuming you are filing for adjustment based on marriage to a US citizen.

Do I need to fill I-864A, if the sponsor money shown on the tax returns is only from my father?

If your father’s income can be proven by W-2s or other methods then you should not need a co-sponsor.

That answer will not impact the FB-2B case at all. It is the truth and that rarely causes problems with visas.

Visitor visa with i94 ending in a month and waiting for i159. what would happen if they overstay?

They can stay until they get a decision on the extension, or six more months unless the case is denied before then.

What is my current status?

Your status is H-1 since that change of status voided your H-4 extension. The last action rule does not apply since your change of status...

Citizenship application could not be determined ?

The problem is that your explanation of the "no" answer is simply wrong. The question refers to moving vehicle citations which are in fact crimes.

How can my Canadian PR effect my current H-1B status and future extensions?

Landed immigrant status in Canada will not affect your H-1. However, it will affect permanent residence if you decide to get that since you cannot...

How can I correct YES/NO answer?

This is very simple. Once you are sworn in, without waiting for any reason, tell the officer which question you wish to amend. If he/she wants to...

Can you apply for multiple immigration visas at once (K-1 vs L1-B)?

This a great question for the immigration attorney being paid to represent you. And yes you can apply for both at the same time, or anytime.