To solve this problem, we need to evaluate the given statements about the origin of life:$\newline \bullet$Statement (a):$\newline$ - The earliest organisms on Earth were non-green and presumably anaerobes.$\newline$ - This statement is generally accepted as true. The first life forms were likely anaerobic bacteria, as the early Earth's atmosphere lacked oxygen.$\newline \bullet$Statement (b):$\newline$ - The first autotrophic organisms were chemoautotrophs that never released oxygen.$\newline$