Answer:
The amendment that guarantees that people accused of a crime can be represented by a lawyer during their trial is the Sixth Amendment.
Step-by-step explanation:
In the Sixth Amendment, the rights of criminal defendants are outlined. If you have been accused of a crime, you have the right to know what the accusation is and who is the one accusing you. You also have the right to be judged impartially, and the trial should not take too long to happen. Finally, you have the right to be represented by a lawyer:
". . . and to have the assistance of counsel for his defense."