When reading a newspaper, you come across the word  subterranean.  you guess the meaning of the word by breaking it into its parts. you know that  sub-  is a prefix meaning "under," and the word  terra  often refers to "earth" or "ground." the suffix  -anmeans "relating to." you guess that  subterranean  means "underground." the process you've just used is called                a.  dictionary skill.      b.  phonetic analysis.      c.  structural analysis.      d.  context clues.

The correct answer is C. Structural analysis

Explanation:

In language, structural analysis is a type of analysis based on the parts or structure that compose a word or a phrase. In the case of words, this type of analysis is done by breaking the word into its basic parts that usually involve separating the root word from its suffixes and prefixes, then analyzing the meaning of each part and in this way understanding the meaning of all the world. This is the process that was used in the case of the word "subterranean" because the word has been broken into its part including the root word "terra" the prefix "-sub" and the suffix "-an" and these parts that are the structure of the word have been used to understand all the word.

this question is grammatically incorrect and is illegible to me so i can not answer.