The default behavior for a function in the Wolfram Language is carefully chosen to be suitable for the vast majority of cases. The Wolfram Language also gives you fine-grained control over the behavior of most functions by providing options that you can customize. You can find what options are available for a function by consulting the documentation or by evaluating Options[function].
You can evaluate Options[function] to view the settings for the function's default options:
To view just the setting for an option, use ReplaceAll (abbreviated by /.) with the option:
Some functions do not have all available options listed in the documentation. For example, Plot shares options with Graphics, so to view the full set of options available for Plot you must navigate to the options on the Graphics page: