If at the end of a fiscal period, a business owner does not make an adjustment for supplies what effect will it have on the business's financial reporting?

I know that this is not a proper procedure of accounting, but would this just affect the business's financials by not ending up with the correct fiscal period financials as:

He didn't use or post the supplies (expense), so the business would show more of a profit than it should for that fiscal period. Is this the correct answer?

If not could someone please let me know how to answer this properly.

Yes, that's a correct answer but you're not done. The used supplies didn't come out of the asset account either, so how does that get affected?