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

Which of the following definitions best describes 'impute'?

A. Test package for a pathway 'ontology'
B. Imputation for microarray data (currently KNN only)
C. Preprocessing of Agilent 4x44 array data
D. Tools for the analysis of protein interaction data.

Answer: Imputation for microarray data (currently KNN only)