Final answer:
In California, adults can legally smoke cigarettes, cigars, electronic devices, marijuana, and pipes. Cocaine is an illegal substance and cannot be smoked.
Step-by-step explanation:
In California, cigarettes, cigars, electronic devices, marijuana, and pipes can be legally smoked by adults. Cocaine, however, is an illegal substance and cannot be legally smoked.
It is important to note that smoking any substance, legal or not, can have negative health effects. Cigarettes and cigars contain harmful chemicals and are known to cause serious health problems, including lung cancer and heart disease. Marijuana is legal for recreational use in California but should be used responsibly. Electronic devices are not smoked but used to inhale vapor, which may or may not contain nicotine.