Final answer:
The correct answer is option E. Both broadcast TV and cable advertising can be purchased on a national, regional, or local level.
Step-by-step explanation:
A similarity between advertising on broadcast TV and cable advertising is that both can be purchased on a national, regional, or local (spot) level. This means that advertisers have the flexibility to target specific geographic locations or reach a broader national audience depending on their marketing objectives.
Whether it's a national campaign or a localized promotion, both broadcast TV and cable advertising offer advertisers the opportunity to tailor their message to the desired target audience.