The service which is used to support peak data rate of 10 to 20 Gbps is …?a.mMTCb.URLLCc.eMBBClear my choice

The service used to support peak data rate of 10 to 20 Gbps is eMBB (Enhanced Mobile Broadband).

Here's a step-by-step explanation:

1. The question is asking about a service that supports a peak data rate of 10 to 20 Gbps.

2. Looking at the options, we have mMTC (massive Machine Type Communications), URLLC (Ultra-Reliable Low-Latency Communications), and eMBB (Enhanced Mobile Broadband).

3. mMTC is designed for large-scale connectivity, but it's not primarily focused on high data rates.

4. URLLC is designed for services requiring ultra-reliability and low latency, not necessarily high data rates.

5. eMBB, on the other hand, is designed to support extremely high data rates and improve broadband access in dense areas.

6. Therefore, the service that supports a peak data rate of 10 to 20 Gbps is eMBB.