based on research around the world, paul ekman concludes that people everywhere express how many basic emotions?

People everywhere express six basic emotions, according to Paul Ekman: happiness, sadness, anger, fear, surprise, and disgust.

Since your prompt looks like a quiz or exam-style item, the concise answer is: Answer: 6 basic emotions.

These six are considered universal because people across very different cultures reliably recognize the same facial expressions for each one.