Which of the following terms includes study of spelling?

The study of spelling is encapsulated by the term orthography, which refers specifically to the conventions of writing in a given language, including rules for spelling, punctuation, and capitalization. Orthography focuses on how sounds are represented in written form, making it essential for understanding how words are constructed and used in written communication.

Phonetics, on the other hand, deals with the sounds of human speech, including their articulation and acoustic properties, but does not encompass spelling. Morphology pertains to the study of the structure and formation of words, analyzing how different morphemes (the smallest units of meaning) combine to form words, without explicitly focusing on spelling conventions. A morpheme itself is the smallest meaningful unit of language, and while it can relate to spelling when it comes to written form, it does not inherently include the study of spelling as a whole. Hence, orthography is the term that correctly aligns with the study of spelling.