Which regular expression would match any string that contains 4 consecutive zeros?^0000[0-4]{0-4}0{4}

The regular expression that would match any string that contains 4 consecutive zeros is 0000.

Here's a step-by-step explanation:

1. 0 - This matches the character '0' literally.

2. 0000 - By repeating the character '0' four times, we are specifying that we want to match exactly four consecutive '0's.

So, if you want to find any string that contains four consecutive zeros, you would use the regular expression 0000. This will match any string that has '0000' in it, no matter what characters come before or after it.

Note: The regular expression you provided ^0000[0-4]{0-4}0{4} seems to be a bit more complex and might not work as expected. The ^ symbol means the start of a line, [0-4]{0-4} means match any character between '0' and '4' zero to four times, and 0{4} means match '0' exactly four times. This would not necessarily match any string that contains 4 consecutive zeros.