[Solved] If the cross-price elasticity of demand for computers and software is negative, this means the two goods are A)substitutes. B)complements. C)inferior. D)normal. Sexual Activity: Human behaviors that include the sexual act and practices related to physical intimacy. Protection: Measures or actions taken to keep something safe from harm, damage, or injury. Online Pornography Exposure: The experience of encountering sexually explicit material on the internet, which can have various psychological effects. Erectile Problems: Refers to the difficulty in achieving or maintaining an erection that is firm enough for sexual activity.