marvin spins this spinner once and chooses one of these cards. which tree diagram represents the sample…

Explanation:

Step1: Identify the first - stage events

The first - stage events are the results of spinning the spinner: red (R), blue (B), and yellow (Y).

Step2: Identify the second - stage events

For each result of spinning the spinner, the second - stage events are choosing one of the cards L, M, or N.

Step3: Analyze the tree - diagram structure

The tree - diagram should start with branches for R, B, and Y. From each of these branches, there should be three sub - branches for L, M, and N.

Answer:

The first tree diagram (the one with R, B, Y as the first - level branches and L, M, N as the second - level branches for each of R, B, Y) represents the sample space of this compound event.