Should I use ‘can’ or ‘will’ here?

One more book WILL/CAN qualify you for a 20% discount and give you a membership access.

I heard that ‘Will’ should be cautiously used in English. I’m not sure which one sounds more natural here. And does the entire sentence sound right to the ear of a native speaker? Thanks :)

Question

Should I use ‘can’ or ‘will’ here?

One more book WILL/CAN qualify you for a 20% discount and give you a membership access.

I heard that ‘Will’ should be cautiously used in English. I’m not sure which one sounds more natural here. And does the entire sentence sound right to the ear of a native speaker? Thanks :)

Answer

Can in this context means "to be able to" or "possibly". It doesn't give certainty. "Will" is more certain.

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