Answer: Verbal description of the learning activity
Step-by-step explanation:
The options to the question are:
a. Slate and stylus for note taking
b.Tactile maps of the school building
c.Verbal description of the learning activity
d. Audio clips​
Visual impairment simply means when an individual has a vision loss and this can either be a total blindness or a partial loss of vision.
Orientation and Mobility training is used to train the people that are visually impaired so that they'll be able to know their environment and move freely. With this training, they can move about and know where to go.
Based on the scenario in the question, the most useful for orientation and mobility training for Ram will be a verbal description of the learning activity. Since he has a problem with his vision, describing the learning activity to him verbally will be of immense help to him.