Answer:
e. search engine optimization
Step-by-step explanation:
Search Engine Optimization (SEO) is the strategy of using keywords that are related to the content of a website. These words are most likely used by customers when they use search engines such as Google, Bing, and Yahoo. Web-pages are ranked according to the content they offer and how many of the keywords they contain. Good SEO drives unpaid traffic to the website which is beneficial for any business.