What are common short-term effects of cannabis on memory and coordination?

• A. Increased energy and improved memory.
• B. Impaired short-term memory and concentration, slowed reaction time, and altered perception.
• C. No effect on memory, but improved balance.
• D. Immediate long-term memory improvement.

Answer: (B)

Cannabis affects the brain areas involved in memory and movement, especially in the short term. THC disrupts working memory and the ability to concentrate, so keeping track of information and following tasks becomes harder. It also slows reaction time and can alter perception—how you sense time, space, and stimuli—which together can impair coordination and driving or other activities that require precise timing. The option that lists impaired short-term memory and concentration, slowed reaction time, and altered perception matches these immediate effects. The other choices suggest energy boosts, no memory effects, or long-term memory improvements, which don’t fit how cannabis typically affects memory and coordination in the short term.