It was almost like traveling back in time
How To Do About Face? (Military)
1. Stand at attention
2. Out the right leg behind the left leg
3. Lift the front toes of the left feet
4. Lift the heel of the right feet
5. And turn until your completely faced the other way
There, you did About Face
The answer is letter a. From the properties of silver, it is shiny and smooth and not as dense as gold, hence the river is a shining river. So it becomes, "Behold the shining river, in it the splashing horses loitering stop to drink"
