It depends on the word which is underlined (you didn't underline anything).
If the underlined word is <u>his son</u>, then the correct answer is indirect object. If the underlined word is <u>a workbench</u>, then the correct answer is direct object.
Answer:
my best guess would be 3. Please don't be mad if i get it wrong
Explanation:
I am assuming that this question is asking you to correct this sentence. Here is the revised sentence: "You forgot that you took my blanket too."