At his grandfather's funeral, rick cries, "grandpa's not coming back." approximately how old is rick?

It seems that you have missed the given options for this question, but anyway here is the answer. When Rick cries and said "grandpa's not coming back," during his grandfather's funeral, we can assume that Rick is approximately 3-5 years old. During this age, children begin to grasp death's finality and understands irreversibility. Hope this answer helps.