Fill in the blank with the most appropriate word.
The teacher said, "Pick up your book, Mike." The teacher told Mike ________.
The two ways of relating what a person has said are 1)direct and 2)indirect (reported speech).In direct speech, the original speaker's exact words are repeated. In indirect/reported speech, the exact meaning is expressed but not necessarily using the original speaker's exact words. Pronouns and possessive adjectives usually change from first or second person to the third person except when the speaker is reporting his own words. Sometimes a noun can be inserted to avoid doubt.
When we turn direct questions and exclamations into indirect speech, they are converted to affirmative statement .( ? and ! is not used).
Option D is correct as when we convert the given command to indirect speech which starts with a verb (pick), a verb of command/request/ advice + object + infinitive is used, and your is changed to his.
The other options are wrong as to is missing, her, and my cannot be used respectively.
The correct answer is D)to pick up his book