Which statement from the text "step away from the smartphone" best explains the author's argument?
a. instead of texting a friend, we should get out and visit that friend.
b. it seems that almost every facet of life can be improved using technology.
c. alarmingly, both children and adults have experienced a serious decline in heart health.
d. in fact, overuse of technology is contributing to a dangerous decline in fitness and health.

Answer is Option D: In fact, overuse of technology is contributing to a dangerous decline in fitness and health.

Explanation:

Technology is increasing day by day. It is definitely making our lives easier. Smartphones are one of the greatest discoveries of this technology. It connects people, entertains them and keeps them informed.

But, unrestricted use of these smartphones is taking a toll of the health of the people and there is a decline in fitness and health. The light that is emitted from smartphones can cause eye problems,  headaches and also lead to insomnia. Decrease in activity leads to weight issues as instead of walking to the person and speaking, we text him the message. Overuse of this technology can even cause depression in a person. So, the author is trying to convey in the text "Step away from Smartphones" that we should use smartphones in moderation and not overuse.