<u>because he was afraid about telling the truth</u>
Explanation:
<em>Remember</em>, from the story we are told Victor received a letter telling him to return over the murder of his brother.
However, when he realized that the monster he created may have killed his brother. Although grieved, Frankenstein hesitated to go back to his hometown. He wondered how he would explain to his family that he was responsible for the death of his brother.
