Unless I'm reading it wrong, options one and two are not equivallent. The first calls 1 then 2 then 3 independent of each other. The second calls 1 which calls 2 which calls 3, 1 dependent on 2 dependent on 3 ( which is missing ).
Part of why subs exist is to ease repetitive tasks w/i code. One applies appropriate style based on need. There will be some instances where option one is best, and others where option two rules.
If you can post a specific example, maybe we can provide a better answer to your somewhat vague question.
Apply yourself to new problems without preparation, develop confidence in your ability to to meet situations as they arrise.
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