Knowledge, and your brain.
Answer:
logic error occurs when the result is wrong...
syntax error occurs when you use the wrong punctuation...
runtime error occurs when the program starts running...
<span>B. locate Web pages related to a specific subject.
Not A because currently no search engine has an in-built option to talk to other people, and even if it did it wouldn't be it's core functionality.
Not C, as there is no way to change ISP (internet service provider) using your search engine.
Not D as search engines have no connection to MS Word.</span>