What is one effect of marijuana on cognitive function?

The correct choice highlights that marijuana is commonly associated with pain relief, which is well-documented in research. This effect is primarily due to cannabinoids interacting with the body's endocannabinoid system, which plays a significant role in regulating pain sensation. While marijuana can have various effects on the body and mind, its pain-relieving properties are among the most recognized therapeutic benefits.

The other options do not accurately reflect the primary cognitive effects of marijuana. For instance, improved memory retention and increased logical reasoning are typically not associated with marijuana use; rather, research often suggests that marijuana can impair short-term memory and affect cognitive processing. Similarly, while some individuals may feel a sense of physical relaxation or coordination after using marijuana, it is generally not known to enhance physical coordination in a positive way for most users.