Cash is not accepted as a payment option when making purchases online.
The payment option that is not accepted online is cash.
When making online purchases, you typically cannot use physical cash as a form of payment because there is no physical exchange of money. Instead, online transactions are usually done through credit cards and debit cards. Additionally, some online retailers may also accept checks as a form of payment, but this is less common.
Therefore, cash is not a viable payment option when making purchases online.