Hi I need help with a question so they are asking me Determining the probability of a coin landing heads up by actually tossing a coin several times is an example of what. I didn't know what it is

The seventh-grade students at charleston middle school are choosing one girl and one boy for student council. their choices for girls are michaela (m), candice (c), and raven (r), and for boys, neil (n), barney (b), and ted (t). the sample space for the combined selection is represented in the table. complete the table and the sentence beneath it.