Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'negative regulation of natural killer cell chemotaxis'?

A. Any process that activates or increases the frequency, rate or extent of natural killer cell chemotaxis.
B. Any process that stops, prevents or reduces the frequency, rate or extent of natural killer cell chemotaxis.
C. A frontal cortex that is part of a right cerebral hemisphere.
D. Any process that stops, prevents or reduces the frequency, rate or extent of B cell chemotaxis.

Answer: Any process that stops, prevents or reduces the frequency, rate or extent of natural killer cell chemotaxis.