II. Language Teaching Pedagogy: Choose the answer that best fits the given text. 

Questions 31-41

31. The set of relationships between the writing system and the sound system of an alphabetic language is called _____.
(A) phonology
(B) phonics
(C) orthography
(D) morphology

(A)phonology: inventory of sounds in a language. 

Describes the way sounds function within a given language and operates at the level of sound systems and abstract sound units. Knowing the sounds of a language is only a small part of phonology. 

https://ielanguages.com/phonology.html

(B)phonics: the study of grapheme(writing system)-phoneme(sound system) correspondence

Orthography(正字法、拼寫法)
 ortho means “proper” or “correct”  
 graph means “writing” 
⇒ orthography means “correct writing.”

e.g.
the correct orthography of the flower is ROSE, not ROWS.
The correct spelling of the home you live in in HOUSE, not HOWSE.