WordPress: how to correctly organize the path to images through the functions.php file?

Question

WordPress

There is an option to add get_template_directory() to the link to the picchu, but this is not correct. Correct - report 1 time in the correct way in the correct file. I don't want to be stuck on this issue for too long.
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If there is a link on a more general topic, regarding paths in general, etc., that would be helpful too.

Answer 1

Good afternoon.
In the right place instead of Write<img src = "assets/img/img.jpg">

< img sec =" get_template_directory_uri(); ?>/assets/img/img.jpg">