Explain thermal expansion process with the help of diagram and two suitable examples from daily life. (See lesson 14)

If its history of, then b) because a) implies only present day (now)

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero. 

Did you ever figure out the right answers since you asked?

The upward force acting on the wing of a airplane in flight is known as the "lift" force. (d)