Best way to change block´s template?

Question

I've been studing for the Magento certification and I came across a question in the swiftotter practice exam that said:

Can someone explain me why the answer I chose is incorrect? I thought the way you changed a block´s layout was with the answer I selected.

Thanks!

Answer 1

1. Doesn't work

2. It works and the Best one,

   higher priority than the <argument name="template" xsi:type..., explanation in 3.

3. Works too :

   It works but the second one is the best because when the template value is specified in the template attribute template="..." have a higher priority when Magento generate layouts than when the template is set in <argument name="..."> one

4. Doesn't work :

   (action node is deprecated)

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Magento DevDocs Says :

Answer 2

It's not the prefered way

the preferred way is the answer marked in green.

you can read more about this in the official documentation.