Open your Illustrator document
Go to File
Select Place
Choose the image file
Click Place
Click on the artboard to insert the image
Select the placed image
Open the Links panel
Click the Embed button
Confirm embedding if prompted
Open your Illustrator document
Go to File
Select Place
Choose the image file
Click Place
Click on the artboard to insert the image
Select the placed image
Open the Links panel
Click the Embed button
Confirm embedding if prompted