Control Arm. A control arm is a bar that has a pivot at both ends. Your car has several, including the upper control arm and the lower control arm, which are arranged to form the letter A. Control arms are part of the suspension system.
I think the rule with anything concerning goats is variety and not too much of any one thing. They can eat most veg, but should not get too much at a time, especially of the brocolli and cabbage family, as this can ferment and cause bloat. Goats are greedy and don't tend to stop eating even when they are full, so although they always seem to be ravenously hungry, little and often is better for them. If you milk them, anything they eat can taint the taste of the milk, and I think the cabbage family will do this.
Even some Department of Agriculture documents have claimed that goats have a catholic taste, meaning that they have a universal, liberal approach to what they eat. We all see cartoons of goats eating clothes hanging from the clothes line, or munching on tins and other rubbish.