Final answer:
The statement is true; an 18 gauge needle is indeed larger than a 24 gauge needle, as needle gauge sizes are inversely related to their diameters.
Step-by-step explanation:
True or False: An 18 gauge needle is larger than a 24 gauge needle.
This statement is true. In the medical field, needles are sized according to a standardized gauge system, where the diameter of the needle is inversely related to its gauge number. The lower the gauge number, the larger the diameter of the needle. Thus, an 18 gauge needle has a larger diameter than a 24 gauge needle, making the 18 gauge needle the thicker of the two.