What is the correct answer and how can this be solved?

A. 0,2,0,2

Step-by-step explanation:

Firstly, Insert 1-4 into

Simple explanation, for the first number.

-1+1=0

For the second number we are saying, -1*-1=1

and then 1+1=2

For the third number we are saying, -1*-1*-1=-1

-1+1=0

For the fourth number we are saying, -1*-1*-1*-1=1

1+1=2

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