What is the primary characteristic of synchronous communication?

The primary characteristic of synchronous communication is that it occurs in real-time. This means that all participants are engaged in the communication simultaneously, allowing for immediate interaction and feedback. Examples of synchronous communication include phone calls, video conferencing, and live chat sessions where the responses happen at the same moment, facilitating dynamic discussions and quick clarifications.

The other options touch on different aspects that do not define the primary characteristic. While there are forms of communication that allow participants to be online at different times, they fall into the category of asynchronous communication. Additionally, while some forms of synchronous communication may require an internet connection, it is not a defining feature, as certain face-to-face interactions do not. Lastly, synchronous communication is not limited to formal meetings; it can occur in various informal contexts as well.