Field lines in an magnetic field
question 1 options:
a. flow from south to north
b. flow from east to west
c. flow from west to east
d. flow from north to south

The lines of magnetic field starts from North and terminates in the South direction outside the magnet and from South to North inside.  

Explanation:

The imaginary lines that are drawn to represent the direction and strength of magnetic field is known as magnetic field lines. The magnetic field direction remains "tangent to magnetic field line". These magnetic field lines never intersect (the magnetic field is distinctive at any point).

The density of the lines decreases when they travel from higher permeability area to lower permeability area. All the field lines have same strength. They are closed lines i.e. they always form the closed loops. By this, we can represent that the field flows from North to South Pole from outward.  

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