The correct response is:
Riley and Layla will each pay personal income tax on the portion of earnings that is theirs.
In a partnership, the entity itself does not pay income taxes; instead, the earnings are passed through to the partners, who report their share of the income on their individual tax returns. Therefore, Riley will pay taxes on the 80% of earnings designated for him, and Layla will pay taxes on the 20% of earnings designated for her.