देखूँगा should be equally correct, as "I" pronoun refers to both genders. Don't know why it was marked incorrect.
Dekhunga is correct but it wasn't an option
Why यह, not इस? I thought देखना took the -को case.
Shoukd be "is ko" as the durect object of the verb
Could a Hindi native speaker please confirm if मैं इस को नहीं देखुंगा is possible or why is यह the preferred or only option here. Thanks