Which of the following words is modified by the participial phrase in the sentence below? I found a textbook packed with information for my test.

a. textbook***
b. I
c. information
d. test

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To determine which word is modified by the participial phrase in the sentence, we first need to identify the participial phrase. In this case, the participial phrase is "packed with information."

Now, let's examine the sentence: "I found a textbook packed with information for my test."

The participial phrase "packed with information" describes the noun that immediately precedes it, which is "textbook." Therefore, the word that is modified by the participial phrase is "textbook."

So, the correct answer is option a. textbook.