Read the following passage about human life expectancy and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions from 23 to 30.

Nomophobia, short for "no-mobile-phone phobia," is a modern phenomenon that affects many people in today's digital age.

What is nomophobia? It is the irrational fear of being without one's mobile phone or being unable to use it. This condition can cause anxiety and distress, and it highlights the profound impact mobile devices have on our lives. The fear of losing or being separated from one's phone is a growing concern. Some common situations that trigger nomophobia include misplacing one's phone, running out of battery, or losing network signal. The fear intensifies when people imagine not having their phones to contact friends and family, access the internet, or use GPS for navigation.

Who easily suffers from nomophobia? Nomophobia is not limited to any age group and can affect individuals of all backgrounds. It often becomes evident when people experience panic or anxiety when they forget their phones at home or are unable to use them temporarily. Symptoms may include restlessness, rapid heartbeat, sweating, and a sense of insecurity.

The roots of nomophobia lie in the convenience and connectedness that mobile phones provide. These devices have become integral to our daily lives, serving as not just communication tools but also cameras, entertainment hubs, personal organizers, and more. This dependence on mobile phones can lead to a feeling of vulnerability when separated from them.

In which paragraph does the writer mention the cause of nomophobia?