______ is a branch of linguistics that studies bow words are combined to form sentences and the rules that govern the formation of sentences.

A．three
B．four
C．five
D．six

A．The once predominant contrastive analysis was gradually replaced by error analysis
B．Different from contrastive analysis, error analysis give less consideration to native language
C．Error analysis compares the forms and meanings across the native and target languages
D．Two main sorts of errors were diagnosed: interlingual errors and intralingual errors