wimax
geolocation
mobile portal
voice portal
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Answer is Wrong!
The correct answer is D. voice portal.
A voice portal is a website with an audio interface that can be accessed through a telephone call. It allows users to interact with the website using their voice, rather than typing. This can be useful for people who have difficulty typing, or who are in a situation where they cannot type, such as while driving.
WiMAX is a type of wireless broadband technology that can be used to provide high-speed internet access. It is not a voice portal.
Geolocation is the process of determining the geographic location of a device or person. It is not a voice portal.
A mobile portal is a website that is designed to be accessed on a mobile device, such as a smartphone or tablet. It is not a voice portal.