Final answer:
The sample is a random sample and it is also an SRS. Each plant has an equal chance of being selected.
Step-by-step explanation:
The sample is a random sample and it is also an Simple Random Sample (SRS). Each plant has an equal chance of being selected because the botanist rolls a six-sided number cube for each row and selects the plant corresponding to the number rolled.
This ensures that there are no restrictions placed on the sample and every plant in the array has an equal probability of being selected.