according to this graph, which of the following statements is true? rq-figure-19.6 click to view larger image. a. present-day sea level is the highest on record because of the current global warming trend. b. sea level during the late paleozoic/early mesozoic was extremely high. c. cenozoic sea level fluctuates but, on average, has increased since the earliest part of the era. d. global sea-level change during the paleozoic was on the order of 250 m.