The technical SEO issue you can solve with an SSL certificate is the lack of site security.
- Slow site speed
- Lack of site security
- Duplicate content
- Negative mobile user experience
The correct answer is: Lack of site security
Explanation: SSL, or Secure Sockets Layer, is essential for encrypting information between a user’s browser and the web server. By having a valid SSL certificate, you ensure that your website is served securely over HTTPS. This not only enhances site security but also builds trust with visitors. HubSpot, for instance, provides SSL certificates for all its CMS Hub customers.
Source: HubSpot Lesson: On Page and Technical SEO