Idk about the birthdays but to mark someone brainliest, two people have to answer your question and then it will give you an option to mark as brainliest. Hope i helped. :)
zach’s birthday is may 27,2001 jack’s birthday is july 1, 1999 corbyn’s birthday is november 25, 1998 daniel’s birthday is april 2, 1999 jonah’s birthday is june 16, 1998
