curriculum/challenges/english/blocks/learn-how-to-talk-about-a-typical-workday-and-tasks/657e45c723bc3d6aed2b5997.md
Essential means something that is absolutely necessary or extremely important. For example, Regular training is essential for team development.
On the other hand, optional refers to something you can choose. For example, attending the social event is optional implies it's a choice, not a requirement.
Why does Jake say he conducts security sweeps?
Because they are optional.
Essential here indicates necessity, not optionality.
Because they are routine tasks.
While they may be part of the routine, the focus is on their importance.
Because they are essential for security.
Because he has free time.
The reason is related to necessity, not availability of time.
3
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