The correct response is:
Gene expression is the process that makes proteins from DNA, gene regulation is how genes are induced (turned on) or repressed (turned off).
This response accurately describes the distinction between gene expression and gene regulation: gene expression refers to the entire process by which information from a gene is used to synthesize functional gene products (usually proteins), while gene regulation refers to the mechanisms that control the timing and level of gene expression, determining when and how much of a gene product is produced.