An example of a classification technique is _________.Group of answer choicescause and effect modelintspam filteringunsuperviced learningeuclidean distance

To identify an example of a classification technique among the provided options, we need to analyze each choice briefly.

1. Cause and Effect Model: This is typically used for understanding relationships between variables but is not a classification technique.

2. Spam Filtering: This is indeed a classic example of a classification task wherein emails are classified as 'spam' or 'not spam' based on their content, sender, and other features.

3. Unsupervised Learning: This refers to techniques that do not use labeled outputs, making it not a direct example of a classification technique as classification typically uses supervised learning.

4. Euclidean Distance: While it is used as a measure in various classification algorithms, by itself, it is not a classification technique.

Based on this analysis, the correct answer is spam filtering, as it directly represents a method of classification used in machine learning.

Final Answer

Spam filtering