Why do time zones deviate from straight lines?

Time zones deviate from straight lines to accommodate the boundaries of countries and regions. Although time zones are based on lines of longitude, they are adjusted to ensure that neighboring areas within a country or region share the same time. This avoids confusion in daily activities, such as business hours and transportation schedules. Additionally, time zones may curve around natural features like rivers or mountains, or follow political boundaries, ensuring that places within a country or state have consistent local time. These deviations help make timekeeping more practical and manageable.

This question related to Chapter 1 Social Science Class 6th NCERT.
From the Chapter 1. Locating Places on the Earth.
Give answer according to your understanding.