It refers to the quality of always providing accurate results when taken numerous times. An example would be that the test is reliable if you do it once and then in a week again, and then in a week again (different examples, same concept) and you get almost the same results. This means that the test is reliable.
Arizona is the describing word here gives a clear picture of where the most beautiful cactus plants are from.
Could you make the image better quality it’s hard to read