1. Tell yourself in simple terms what you need to strengthen
In this case, you need to strengthen the fact that the digital divide is responsible for lower electronic coupon redemption rates
2. Ask yourself what data you already have about things mentioned in whatever you are strengthening
In this case,
a. The redemption rate for e-mailed coupons < the redemption rate for traditionally distributed paper coupons.
b. Proposed reason is "digital divide"- those who might benefit the most from using coupons, such as homemakers, the elderly, and those in low-income households, often do not have the knowledge or equipment necessary to go online and receive coupons.
3. Remember that the correct answer cannot repeat any of the given data points
In this case, option C is a repetition of given data. We already know that there are people who lack internet connection (equipment needed to access the e-coupons)
4. Try to plug in your chosen answers back into the given argument to see if it all fits together
Let's try that with option B and option C here
Option B - The redemption rate for e-mailed coupons is far lower than that for traditionally distributed paper coupons. One factor is the "digital divide"—those who might benefit the most from using coupons, such as homemakers, the elderly, and those in low-income households, often do not have the knowledge or equipment necessary to go online and receive coupons.
The redemption rate of ordinary coupons is particularly high among elderly and low income people that do not know how to use computers.. Hence the claim that the digital divide is responsible for lower electronic coupon redemption rates is true
This makes sense as an argument because we now have an additional data point that the usage of coupons is higher among those people who do not have the means to redeem e-coupons. This explains why there is more redemption of paper coupons
Option C - The redemption rate for e-mailed coupons is far lower than that for traditionally distributed paper coupons. One factor is the "digital divide"—those who might benefit the most from using coupons, such as homemakers, the elderly, and those in low-income households, often do not have the knowledge or equipment necessary to go online and receive coupons.
Many homes, including those of elderly and low income people, do not have high-speed internet connections. Hence the claim that the digital divide is responsible for lower electronic coupon redemption rates is true
Doesn't make sense because we are just repeating the given data