When would a personal letter be appropriate?
a.
when asking a company for information
o b. when answering an ad for a job
o c. when providing information about services
od. when sending an invitation

According to behaviorism, instruction should provide necessary stimulus in order for learners to produce desired response. it is important that the learner must know how to execute the proper response under the required conditions in order to produce the desired response (ertmer & newby, 1993). instruction should provide learner with opportunities that the learner practice to elicit the desired outcome.