Which tea option listed promotes a calming effect?

The option that promotes a calming effect is the Meditative Mind tea. This blend typically includes ingredients known for their relaxing properties, such as chamomile, lavender, or other herbal elements designed to reduce stress and enhance tranquility. The concept behind this tea is to create a soothing experience for the consumer, often recommended for those looking to unwind or meditate.

In contrast, the other options, while enjoyable, may not primarily focus on calming aspects. Earl Grey is a black tea that may provide a soothing aroma from the bergamot but is still a caffeinated tea that can have stimulating effects. English Breakfast is another full-bodied black tea that tends to invigorate rather than calm. Boulder Blues might have its unique flavor profile and benefits but is not specifically associated with promoting relaxation in the same way that Meditative Mind is cultivated to do.