• Negative match
• Exact match
• Phrase match
• Broad match

The correct answer is: Broad match

Explanation: When you create keywords in Google Ads, the default match type assigned is Broad match. It is the most extensive match type and doesn’t require the specification of any other match type like exact match, phrase match, or a negative match type. The syntax for Broad match is straightforward, requiring only the input of the keyword itself.