Answer:
Option c. you can be sure that a validated page will work correctly in a browser
Explanation:
A faulty HTML codes can result in various types of unexpected error when running the web page in different platforms or browsers. This will cause an inconsistent style or layout. HTML code validation can check if the code adopt the standard tag and structure. A validated HTML code can guarantee a web application running smoothly in different browsers and always present consistent web page layout to users. HTML code validation has become part of the standard workflow before a web page go live in internet.