During the last several years, brian, who is now 87 years old, has experienced a decline in his hearing and vision. he also has increasing difficulty walking up stairs and lifting things. according to the text, brian is in the period of life.

Senescence refers to a common cellular procedure which happens due to the anxiety, stress or any kind of damage. It shapes an elective reaction of cells to harm that may somehow cause customized cell expiration. ... Some senescent cells continue in tissues, sometimes expanding in recurrence as an element of age.

answer; list;