Final answer:
Search engine rankings are primarily determined by the quality and relevance of the website's content and the number of reputable backlinks. Keywords play a role but require organic integration into the site's content, not just submission to the search engine. Option c is the answer.
Step-by-step explanation:
Search engine rankings are determined by several factors, none of which include options a or b. Option d is partly correct, but the primary factor is option c.
The most accurate answer to how search engine rankings are determined is c.by the content and how frequently others link to you. Search engines use complex algorithms that take into account the quality of content, how useful it is to users, and how many other reputable sites link to the content, which is known as backlinks. These algorithms also consider keywords that are relevant to the search query, but these are not simply submitted to the search engine company; they should be organically integrated into the website's content.
Websites need to utilize search engine optimization (SEO) best practices to improve their visibility in search engine rankings. This means not only having high-quality, relevant content but also ensuring that the site is well-connected through links from other reputable sources.