Lena cries at her brother’s wedding while her best friend, Carrie, can’t stop laughing. How can you explain these two different reactions to the same event?

Pseudobulbar affect (PBA) is a condition that is marked by uncontrollable and at times, inappropriate laughing or crying. While it can be explained that Lena is crying at her brother's wedding because she may be happy for him, it is more peculiar that Carrie cannot stop laughing. Carries may have PBA, and thus, has no control over the fact that she is laughing at the wedding.

Explanation:

need more in formation

answer is b

  a   having low self-esteem

  b   having abusive family members

  c   having poor school attendance

  d   having friends who discuss gang life

living torture and being abused makes one not mind harming other people.

and also not being supported and abusing one turns one into this state.