Answer:
D. using a repair strategy of consulting an expert source
Step-by-step explanation:
Anthony has already tried to find out the meaning by using context clues, which is an admirable effort. Now he is consulting an expert source (the dictionary) to repair his understanding of the text.
Clearly, he wouldn't be checking the dictionary unless the word is very important to his understanding and unless he can't figure it out on his own.
None of the other answer choices are accurate; he is not summarizing, he is close-reading; he is not asking questions, unless you consider that he's asking the inanimate dictionary; he is not making an inference, because he's looking at the dictionary, not drawing conclusions.