Hi,
I came across this typo in a string for the upcoming Moodle 3.11, but I was unable to see it in En_fix in AMOS in order for it to be fixed.
Thank you German for noticing and raising this.
This string can be found in en_fix at https://lang.moodle.org/local/amos/view.php?t=1620326250&v=l&l=en_fix&c=qtype_essay&s&d=privacy%3Apreference%3Aresponserequired and as you will see, the fix has been already submitted by Mohammad Ali and it will be merged to the official language pack soon.