Solution :
a). The following items are :
Salary   ---- taxable
Cash dividend that is received on common stock of Chevron  -- Taxable
The Interest on the bonds that is issued by Boston City --- Â Not taxable
The proceeds of Life Insurance --- Â Not taxable
The interest on the CD that is issued by the Wells Fargo Bank -- Â Taxable
The Inheritance which is received on the death of Aunt Margie  ---  Not taxable
The Proceeds from repayment of the loan  ----  Not taxable
b). Aiden's filing status is Head of households.
c). Aiden should take the standard deductions.
d). Aiden's taxable income in 2018 :
  Cash dividend that is received on the Chevron common stock  $ 2,200
  Salary                                          $ 80,000
  Interest on the CD issued by the Wells Fargo Bank     $ 2,000
  AGI                                            $ 84,200
  Less : standard deduction                          $ 18,000
  Taxable income                                  $ 66,200