Answer:
familiar words for clues.
Step-by-step explanation:
The most convenient way to define unfamiliar words is to look for familiar words for clues. It is a time-saving strategy done by almost all while reading any text.
Most of the time, the author uses context clue strategy to define an unfamiliar word in the following sentences. It helps to save time by eliminating the time to spend for looking definition in dictionary or guessing the meaning of the word.
Therefore, the correct answer is option A.