On which of the following tasks would the presence of others be MOST likely to lead to improved performance?

A) reciting the months of the year in alphabetical order
B) learning foreign language words
C) counting backward from 10 to 1
D) learning nonsense syllables

The presence of others is most likely to improve performance on simple or well-learned tasks due to social facilitation. Counting backward from 10 to 1 is a simple task that most people are familiar with, so performance on this task would be most likely to improve with the presence of others. Tasks like reciting months in alphabetical order, learning foreign language words, or learning nonsense syllables are more complex or unfamiliar, making them less likely to benefit from the presence of others.