The Viking spacecraft observed several features on Mars which, at first, appeared to be artificially crafted. After further study they proved to be the result of several processes. These were related to camera use and technology and also to on the Martian surface.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

real, smaller and upside-down.   so the answer should be b.

a displacement distance is size of displ