IDENTIFY THE TYPE OF MUTATION please..!

there are three types of DNA Mutations: base substitutions, deletions and insertions. Single base substitutions are called point mutations, recall the point mutation Glu > Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types

it is b

explanation: mark brainliest because i am trying to get to the next level and i just need 1 more