Bucket Naming Guidelines: Google Cloud Storage requires that bucket names must be unique, contain only lowercase letters, numbers, dashes (-), underscores (_), and dots (.), and start and end with a number or letter1.
Valid Bucket Name: Based on these guidelines, the valid bucket name from the options provided is 'company-storage-data' because it only contains lowercase letters, numbers, and dashes1.
Invalid Bucket Names: The other options are invalid because:
Option B and C contain uppercase letters, which are not allowed1.
Option D contains spaces, which are also not allowed1.
Reference:
Google Cloud's documentation on bucket naming guidelines1.