What the answer to this

C

Step-by-step explanation:

i⁰ = 1

i¹ = i =

i² = -1

i³ = i².i = -1.i = -1

i⁴ = i².i² = -1.-1 = 1

i⁵ = i⁴.i = 1.i = i

so, looking only i¹,i², i³, i⁴ is easier

19 / 4 = 16 + 3 => (4 x 4 ) + 3

so, we'll look i³

i³ = i².i = -1.i = -1

Hope this helps ^-^

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

i am unable to solve this problem

step-by-step explanation: