During a criminal trial involving child pornogra phy charges, the defendant’s lawyer returned late from the lunch recess. The trial resumed, and the defendant had no lawyer present for seven minutes. During that time, prosecutors introduced incrimi nating evidence. When the lawyer returned from lunch, he did not object to the testimony that had been presented while he was absent. The defen dant was convicted and sentenced to life in prison. Which of the defendant’s rights were violated? Can an argument be made that his conviction should be overturned?