A. How many lessons are there today? There are ... lessons today.

Based on the provided text, the number of lessons is not explicitly stated. However, the options are 1) four, 2) six, 3) five. Without audio context, a definitive answer cannot be provided. Assuming a common school schedule, 'five' or 'six' are plausible. If this is a multiple-choice question from a test where the audio is missing, and assuming there's a correct answer among the options, the user would need to select one. Since I cannot hear the audio, I cannot determine the correct answer.