a. The second sentence provides background for the first
Explanation:
According to the first sentence, research has proven that colorful and vivid advertisements helps to attract more people.
Additionally, the second statement says that marketers use various research studies to develop their advertisement.
The relationship between the two sentences is that the second sentence provides background for the first by explaining how the market research has helped.
In the beginning of the story, phillip is kind of annoyed and worried that he is with Timothy because hes black. At the end of the story,phillip and Timothy are really good friends and love each other until Timothy gets sick.
Guppies can live with other peaceful fish in aquariums, but piranhas should only be kept in tanks with other piranhas because piranhas typically eat other fish.
