Read the sentence.

Research has proven that smoking is bad for your health. The Centers for Disease Control and Prevention (CDC) has reported that smoking can double or even quadruple the risk of coronary heart disease.

Which word or phrase should be added to clarify the relationship between the first and second sentences?

However,
For example,
Regardless,
If only,

for example?

yassssssssssssssssssss

it has noting to do with the answer

Bella, I would agree. Research has proven that smoking is bad for your health. For example, the Centers for Disease Control and Prevention (CDC) has reported that smoking can double or even quadruple the risk of coronary heart disease.

I believe its B.

If only I could add some humor to clarify the relationship between the first and second sentences! Well, here goes nothing:

For example, if you think smoking is good for your health, please raise your hand...wait, you can't, because they're too busy holding cigarettes!

To determine the word or phrase that should be added to clarify the relationship between the first and second sentences, we need to analyze the content of both sentences. The first sentence presents the premise that research has proven smoking is bad for health. The second sentence adds further evidence to support this premise by stating that smoking can double or quadruple the risk of coronary heart disease, which implies that smoking is harmful to health.

Given the context, the phrase "for example" would be the most appropriate addition to clarify the relationship between the two sentences. "For example" introduces a specific instance or evidence that supports the general claim made in the first sentence. By adding the phrase "for example" to the sentence, it would read:

Research has proven that smoking is bad for your health. For example, the Centers for Disease Control and Prevention (CDC) has reported that smoking can double or even quadruple the risk of coronary heart disease.

This addition provides a specific example from the CDC that strengthens the overall argument about the negative effects of smoking on health.

yaaas at slay and devoured