What types of services does the INMARSAT-M service provide?

The INMARSAT-M service is designed to provide mobile satellite communication primarily for maritime and land mobile users. The service offers specific data rates for different types of communication. In the case of INMARSAT-M, it provides voice communication at a rate of 6.2 kbps, which allows for reasonably clear voice conversation. Additionally, it supports data transmission at a rate of 2.4 kbps, which is suitable for sending small amounts of data or messages. The fax capability is also available at 2.4 kbps, enabling the transmission of documents, albeit at a slower speed compared to other modern technologies, but still functional for essential communications. Furthermore, INMARSAT-M includes e-mail services, accommodating users who need to exchange written messages without requiring extensive bandwidth.

This combination of services—voice at 6.2 kbps, data and fax at 2.4 kbps—makes option C the correct answer. It accurately reflects the typical performance and capabilities of the INMARSAT-M service in enabling effective communication for users in remote areas or at sea.