Question

to find a words meaning, the reader can study the surrounding words, which are called the
antonym clues.
context clues.
word parts.
root words.

Explanation:

Context clues are the surrounding words or phrases that help a reader determine the meaning of an unknown word. Antonym clues are words with opposite meanings. Word parts (like prefixes, suffixes) and root words (base form of a word) are different from using surrounding words.

Answer:

context clues.