I'll give you a question, please answer with step-by-step reasoning process.
In geology, ripple marks are sedimentary structures (i.e. bedforms of the lower flow regime) and indicate agitation by water (current or waves) or wind.\n\nAnswer this question: what do ripple marks in sedimentary rock mean?

agitation by water ( current or waves ) or wind
This is the relevant information: In geology, ripple marks are sedimentary structures (i.

e.

bedforms of the lower flow regime) and indicate agitation by water (current or waves) or wind.

.

Therefore, the answer is agitation by water ( current or waves ) or wind