It would be imagery because the excerpt is very descriptive.
Advertising should always be in line with promotional and marketing objectives, and the business strategy or mission of the organization.
LEARNING OBJECTIVE
Explain different types of advertising; informative, persuasive and reminder oriented
KEY POINTS<span><span>Reminder advertising reinforces previous promotional activity by keeping the name of good, service, person, or cause before the public.</span><span>Marketers use persuasive advertising to increase the demand for an existing good, service, or organization.</span><span>Informative advertising is often used when launching a <span>new </span>product or for an updated or relaunched product.</span></span>
"Since we must go through the storm before seeing the rainbow, we often must experience sorrow before joy." This does not pair up.
"As a result we must go through the storm before seeing the rainbow, we often must experience sorrow before joy." This is not an after effect sentence.
"Just as we must go through the storm before seeing the rainbow, we often must experience sorrow before joy." This sentence is both fluent and linguistically correct.
"Even though we must go through the storm before seeing the rainbow, we often must experience sorrow before joy." This statement is not disregarding anything--so the phrase "Even though..." would not make sense.
Thus, the correct answer is option C. Just as. This is because all the other options do not transition correctly into this sentence, or at least, in this context.
