In the mechanical drill method of second language acquisition : (a) The learner has the freedom to from many responses.( b) The learner’s response is totally controlled.( c) Comprehension of the item by the learner is not required.( d) Comprehension of the item by the learner is obligatory.The right combination according to the Code is

In linguistics, prosody is the study of elements of speech that are not individual phonetic segments but which are properties of syllables and larger units of speech, including linguistic functions such as intonation, stress, and rhythm. Such elements are known as suprasegmentals. (Source: Wikipedia)

Two forms of prosody are typically distinguished: 'affective prosody' refers to the expression of emotion in speech, whereas 'linguistic prosody' relates to the intonation of sentences, including the specification of focus within sentences and stress within polysyllabic words.