Explanation
Change Character Encoding to UTF-8 and Select Unicode Output are two settings that could solve this issue.
Character Encoding is a setting that determines how characters are encoded and decoded when importing or exporting data in Marketing Cloud. UTF-8 is a type of character encoding that supports all characters in the Unicode standard, including accented characters. Unicode Output is a setting that enables the output file to be encoded in UTF-8 format when exporting data from Marketing Cloud. By changing Character Encoding to UTF-8 and selecting Unicode Output, the admin can ensure that accented characters are displayed correctly in the extracted file.

To limit the distribution of Marketing Cloud tracking data via email to only those within the ntoretail.com domain:
* Add a Domain to the Export Email Whitelist: Configure the settings to include 'ntoretail.com' in the export email whitelist. This ensures that only email addresses from this domain can receive exported data.
* Enforce Export Email Whitelist: Activate this setting to strictly enforce the whitelist during data exports, preventing any non-whitelisted domains from receiving tracking data.

To sync specific contacts from Sales Cloud to Marketing Cloud without syncing all contacts, particularly when not all contacts need email communications, the admin should use a Boolean field to filter the contacts.
This can be configured in the Contact Builder under Data Sources. A Boolean field allows for a simple true
/false condition that can be set in Sales Cloud and used to control which records are synchronized based on their relevance for email communication. This method ensures that only contacts marked true (or false, depending on the setup) are brought into Marketing Cloud, efficiently managing the sync and keeping irrelevant contacts out of the system.
Reference: Salesforce Help - Synchronize Salesforce Data

For the customer's requirement of retargeting subscribers based on click activity with dynamic content adjustment based on regional market, the necessary skill set is AMPscript. AMPscript will allow the team to dynamically populate email content based on data attributes such as regional market from the master subscriber data extension, and it can also handle complex decisioning based on subscriber interactions within the email (like clicks on links).
Reference: Salesforce Help - AMPscript