Which topic sentence would best introduce this paragraph?
O Non-word strings are a series of letters that look and
sound like words but have no meaning,
O Non-word strings have interested scientists for
decades, and they are the foundation of comedy,
O Scientists are interested in what makes people
laugh, and they conduct experiments to determine
what is considered funny,
O Scientists are responsible for conducting studies
Dimere participants are invited to be a part of the
research process and experimentation,