A single taxon making multiple types of traces is called Trace fossil.
Option A is correct
Trace fossils are indirect evidence of ancient life, such as footprints, burrows, or coprolites formed by the actions of organisms, and they can provide valuable information about their behavior, diet, and habitat.
A single taxon, or a group of organisms of the same species, can make multiple types of traces. For example, a dinosaur might leave footprints in mud, burrows in the ground, and coprolites in its dung pile. These traces can all be used to identify the dinosaur and learn about its life history.
Index fossils are fossils that are used to identify the age of rocks. They are typically rare and widespread, and they can only be found in a narrow range of geological periods.