(wrong),b(wrong), a(if d is wrong then a is also wrong),So Option C

https://help.salesforce.com/s/articleView?id=000358792&type=1

When using Advanced Mapping for data imports in Salesforce Nonprofit Success Pack (NPSP), it is

essential to understand that the target objects must be NPSP objects. Advanced Mapping is designed

specifically to enhance the data import capabilities within NPSP by allowing detailed mapping

configurations that align with NPSP's data model.

Key Considerations:

NPSP Specific: Advanced Mapping is tailored for NPSP objects, ensuring that data is correctly mapped

and imported into the NPSP-specific fields and objects.

Enhanced Data Import: This feature allows for more precise data import, reducing the likelihood of

errors and ensuring data integrity.

Steps for Using Advanced Mapping:

Navigate to NPSP Settings:

Go to NPSP Settings -> Data Import -> Advanced Mapping.

Configure Mapping:

Set up mappings between source data fields and target NPSP object fields.

Ensure that the target fields align with the NPSP data model requirements.

Perform Data Import:

Use the NPSP Data Importer to upload and import the data using the configured mappings.

Reference:

Salesforce Nonprofit Success Pack Documentation

Salesforce Trailhead: Configure Advanced Mapping for NPSP Data Import