When considering the land surface: a) deposition of sediments is occurring on it in most places most of the time, so you can go almost anywhere and find a complete or nearly complete record of geologic history. b) deposition of sediments occurs in only a few places, with erosion or nondeposition occurring in most places to produce inclusions, and one must piece together geologic history from rocks in many places. c) deposition of sediments occurs in only a few places, with erosion or nondeposition occurring in most places to produce unconformities, and one must piece together geologic history from rocks in many places. d) deposition of sediments occurs in only a few places, with erosion or nondeposition occurring in most places to produce unconformities, and there is no way to figure out anything about geologic history. e) deposition of sediments does not occur on land, so there is no way to figure out anything about geologic history.