A Completely avoiding the use of English when giving instructions, using Portuguese throughout the lesson, even for communicative activities.
B Giving instructions in the target language (English)using the most complex and rapid language possible (jargon, complex phrasal verbs), without pauses or gestures, to expose students to "real English."
C Writing the instructions on the board in English and expecting students to decipher them on their own using a dictionary, without any oral mediation from the teacher.
D Using comprehensible input (Krashen), adapting language (simplifying sentences, using gestures, synonyms, and examples) to ensure students understand the instructions in the target language.