What is required consent for marketing related to tax return data?

The requirement for consent in marketing related to tax return data is primarily focused on ensuring that any use of sensitive information, such as dollar amounts, is conducted ethically and in compliance with legal guidelines. This is vital because tax return data contains personally identifiable information that needs to be protected to maintain taxpayer confidentiality and trust.

When organizations use dollar amounts in their marketing efforts, they must obtain explicit consent from the taxpayers to use specific financial information. This is to ensure transparency and to prevent any misuse of the taxpayers' data, which could lead to privacy violations or unauthorized sharing of sensitive financial information. Therefore, obtaining consent for the use of dollar amounts demonstrates a commitment to protecting taxpayer data while also adhering to regulatory requirements.

In contrast, other options either involve specific identifiers, like social security numbers, data not typically used in consent-related marketing, or general information that does not directly tie into the marketing of services. Hence, the correct answer emphasizes the need for explicit consent regarding dollar amounts to safeguard taxpayer's financial privacy.