Correct answer C. Why not A.

### **Marketing User Checkbox in Salesforce**

The **Marketing User** checkbox is a setting on the **User record** in Salesforce that grants additional campaign-related capabilities. However, it **does not override object permissions** assigned through Profiles or Permission Sets.

### **What Does the Marketing User Checkbox Do?**
When checked, it allows users to:
✔ **Create, Edit, and Manage Campaigns** (if their profile already has Campaign object permissions).
✔ **Import Leads** using the Data Import Wizard.
✔ **Use Advanced Campaign Features**, such as managing campaign members and tracking campaign statistics.

### **Limitations of the Marketing User Checkbox**
❌ **Does NOT grant access to the Campaign object** if the user’s profile only has **Read-Only** permissions.
❌ **Does NOT override Profile or Permission Set restrictions**. If a user only has **Read-Only** access to Campaigns, checking this box **won't** allow them to edit Campaign records.
❌ **Still requires proper Sharing Settings** to ensure visibility of Campaigns.

### **Key Takeaway**
The **Marketing User checkbox** is useful for enabling campaign-related functionalities but is **not a replacement for Profiles or Permission Sets** when adjusting object-level permissions.

👉 **In your scenario**, the best way to grant a few marketing users edit access while keeping others at read-only access is by using **Permission Sets**, not the Marketing User checkbox. 🚀...

To provide a few marketing users with comprehensive edit access on Campaigns while still using one profile for all marketing users, the administrator should use:

C. Permission sets

Permission sets allow the administrator to grant specific permissions to individual users without changing their profiles. This way, only the selected marketing users will receive the necessary edit access on the Campaign object.

We need to open up access to the Campaign object. Question implies marketing user checkbox is already checked.
https://help.salesforce.com/s/articleView?id=sf.user_fields.htm&type=5

А is correct. The Marketing user checkbox is in User record detail, not in profile.

C should be correct since we need to open up access (edit) to subset of users

A is Correct?