WordPress at a glance
filter is not described

woocommerce_admin_preload_options filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_admin_preload_options', 'filter_function_name_5190' );
function filter_function_name_5190( $array ){
	// filter...

	return $array;
}
$array
-

Where the hook is called

Loader::add_component_settings()
woocommerce_admin_preload_options
woocommerce/packages/woocommerce-admin/src/Loader.php 1051
$preload_options = apply_filters( 'woocommerce_admin_preload_options', array() );

Where in WP core the hook is used WooCommerce

woocommerce/packages/woocommerce-admin/src/Features/Homescreen.php 52
add_filter( 'woocommerce_admin_preload_options', array( $this, 'preload_options' ) );
woocommerce/packages/woocommerce-admin/src/Features/Marketing.php 62
add_filter( 'woocommerce_admin_preload_options', array( $this, 'preload_options' ) );
woocommerce/packages/woocommerce-admin/src/Features/Navigation/Init.php 30
add_filter( 'woocommerce_admin_preload_options', array( $this, 'preload_options' ) );
woocommerce/packages/woocommerce-admin/src/Features/Onboarding.php 218
add_filter( 'woocommerce_admin_preload_options', array( $this, 'preload_options' ) );