This is the link to the question with my answer: https://i.stack.imgur.com/XAXU7.jpg
I'm not sure if I identified the prime implicants and essential prime implicants correctly.
I need to know if my answer is correct, that is there are: 6 prime implicants, and 5 essential prime implicants.
Thanks in advance for the help!
You are missing one prime implicant, and as a consequence incorrectly declared one of the primes you found essential.