Lab$-$created diamonds can potentially increase diamond supply and reduce prices. The De Beers diamond consortium, which sells naturally mined diamonds, is interested in what people think about lab$-$created diamonds.

One potential study would consist of having participants attempt to decide if diamonds are lab$-$created or natural. Each participant would come to the testing room and see the same set of $10$ diamonds. The response variable would be the number of stones correctly identified as lab$-$created or natural.

What type of study is this?

Question $3$ options:

Survey

Time series

Observational Study

Experiment