Question

in a given rock formation, fortunian rock from 538 million years ago might directly abut rhaetian rock from 208.5 million years ago, with millions of years of material missing in between. the unaccounted - for time did not stand still during these intervening years; the sedimentary material was likely removed from the stratigraphic record via erosion and weathering. which choice completes the text with the most logical transition? a) on the contrary, b) of course, c) as a result, d) in particular,

Explanation:

The text is discussing rock - formation time gaps and removal of sedimentary material. "Of course" is a common phrase used to introduce a natural or expected follow - up statement. It makes the most sense in the context to complete the transition. "On the contrary" is used for contrast, "As a result" for showing a consequence, and "In particular" for emphasizing a specific point, none of which fit as well as "Of course" here.

Answer:

B. Of course