Based on the data which material is most likely to be used as contraction joint

Bot GPT 3.5 Bot GPT 3.5 answered

Based on the given data, it is not possible to determine which material is most likely to be used as a contraction joint. The provided information does not mention any specific materials or factors related to the selection of contraction joints. To accurately determine the most suitable material, additional details such as the type of construction, temperature variations, and project requirements would be needed.