Answer:
B). Pronunciations.
D). Dictionaries.
Step-by-step explanation:
Context clues are demonstrated as the hints or clues that are provided by the author to signal the meaning of an unfamiliar word. It allows the readers to understand the meaning of such words more clearly and text as a whole comprehensively.
In the given excerpt, the words 'pronunciations' and 'dictionaries' function as the clues for explaining the meaning of the word 'phonetics.' These words signal the reader that 'phonetics' is associated with the 'physical characteristics of human speech i.e. 'dictionaries'(words used in speech) and the 'pronunciation'(how they are uttered or sound) that allows the listener to understand the perceive the intended meaning. Thus, options B and D are the correct answers.