Final answer:
Advising students to examine the use of each word in context and narrow connotations for the words to a singular context is the best instructional method to help students understand and retain the meaning of the new words in the sentence.
Step-by-step explanation:
Option C, advising students to examine the use of each word in context and narrow connotations for the words to a singular context, is the best instructional method to help students understand and retain the meaning of the new words in the sentence.
By looking at how each word is used in the sentence and considering its specific meaning in that context, students can gain a better understanding of the unfamiliar words without relying on external sources.
This method allows students to build their vocabulary skills and develop a deeper comprehension of the text.