Choose the word which is different from the rest.

Archaeology
Ecology
Epigraph
Palaeontology

The answer is C. Epigraphy.

Archaeology is the study of human history through the excavation of material remains. Ecology is the study of the relationship between organisms and their environment. Palaeontology is the study of fossils. Epigraphy is the study of inscriptions.

The other three options are all sciences that study the natural world, while epigraphy is a humanities discipline that studies human history.