Answer:
20 slides
Step-by-step explanation:
A Pecha Kucha presentation is a fast-paced presentation that include 20 slides shown for 20 seconds each. The rules for this presentation is very simple and clear that it contain specific 20 slides set to proceed automatically every 20 seconds each that makes the total time of presentation of six minutes and 40 seconds. The slides move itself as the speaker or presenter speaks.
Hence, the correct answer is "20 slides".