What characterizes non-probability sampling?

Non-probability sampling is characterized by the selection of samples based on convenience, where researchers choose participants who are easily accessible rather than employing random selection methods. This approach does not provide every member of the population with an equal chance of being included in the sample. Instead, it often relies on the researcher's judgment, available resources, or specific criteria to select participants.

Convenience sampling is commonly used in exploratory research where the goal is to gather preliminary insights rather than to make generalizations about a larger population. This method allows researchers to quickly collect data without necessitating rigorous statistical sampling methods, which can be time-consuming and costly.

The other options indicate methods associated with probability sampling, such as selecting samples randomly or systematically, which emphasize equal chances for all members of the population.