Answer:
plug-in
Explanation:
A Plug-in is a software that provides additional functionalities to existing programs. The need for them stems from the fact that users might want additional features or functions that were not available in the original program. Digital audio, video, and web browsers use plug-ins to update the already existing programs or to display audio/video through a media file. Plug-ins save the users of the stress of having to wait till a new product with the functionality that they want is produced.
ICS would bet he answer.
Good luck! (:
Many people use relative location on a daily basis by using B) their mental maps of an area.
You know what a certain area looks like, at least approximately, so you don't need to use these other options on a day to day basis. You can rely on your mental maps to do the work for you.
