Final answer:
For suturing a liver laceration, a surgical technologist should prepare a tapered needle as it is designed to suture delicate organs like the liver with minimal tissue damage.
Step-by-step explanation:
During an emergency exploratory laparotomy for a liver laceration, a surgical technologist will need to prepare suture attached to a type of needle that is suitable for suturing liver tissue. Given the options provided, the most appropriate choice is A. tapered needle. Tapered needles are designed to penetrate and pass through soft tissues easily without causing unnecessary damage, which is crucial for delicate organs such as the liver. On the other hand, reverse cutting and conventional cutting needles are more suitable for skin or tough tissue where a sharper needle is necessary, and blunt needles are typically used for friable tissue or tissue that is easy to penetrate without a cutting edge, such as muscle or liver, but they are less common than tapered needles for liver repair.