Answer:
Arithmetic sequence.
Step-by-step explanation:
We have been given a sequence : -2, 0, 2, 4, 6. We are asked to define the type of our given sequence.
We can see from our given sequence that each next term is 2 more than the previous term of the sequence.



Since the difference between the consecutive terms is constant and each next term is produced by adding 2 to preceding term, therefore, our given sequence is an arithmetic sequence.