Correct Answer: She said to her brother, "I am going to meet my friend."

Solution : The fourth option is the correct choice.

The given sentence is in indirect speech. As per the question, we have to change it into direct speech. The process of transformation is as follows:

• The reporting verb "told" is changed to "said".
• The third-person pronouns "she" and her" are changed to the first-person pronouns "I" and "my", respectively.
• The past continuous tense "was going" is changed to the present continuous tense "am going".
• The words of the speaker are enclosed in the inverted commas.

Therefore, the correct answer is: She said to her brother, "I am going to meet my friend. "