Which of the Following Is True

Which of the following is true?

A) Beginning learners are able to discriminate between relevant and non-relevant stimuli
B) Trial and error is the best strategy for efficient skill learning
C) Practitioners should focus learner's attention to the critical elements of the motor skill being learned
D) When introduced to a new skill, learners can identify relevant stimuli without the help of the practitioner, but cannot identify irrelevant stimuli without direction