Emphysema is a health condition in which the lungs can no longer expel carbon dioxide normally. as a result, a person who has emphysema may have high blood acidity levels.

Carbon dioxide increases acidity when dissolved in water e.g. in blood as it reacts with the water to form carbonic acid which has a slightly acidic pH.

I think the correct answer from the choices listed above is option B. The gap between those with access to new technologies and those without is called the digital divide. It is a social issue due to the rapid growth of new technologies. Hope this answers the question.