Which one of the following can be used to stop spamming of comments on a blog?

Best practices on writing better anchor text are?

Which is a Grey hat SEO technique?

Which is not an example of Engagement Metrics with relation to social media?

Which is not a valid statement for cross linking?

An XML sitemap can have maximum of

All major search engines are case sensitive.

Which is an ethical SEO Technique?

Which statement about Google's technical and quality guidelines is true?

Which action could get you banned by Google?

Google looks down upon paid links for enhancing page rank. If a website sells links, what action/s does Google recommend to avoid being penalized?