If we increase the distance traveled over the same period of time, this will

decrease the speed.
increase the speed.
decrease the velocity.
not affect speed or velocity.

don't know if it's a or b. need this to be right.

If we increase the distance traveled over the same period of time, this will:

                 increase the speed.

It is given that:

The distance is increased whereas the period of time remains the same.

We know that the speed is defined as the ratio of distance over time.

i.e.

Now, if Time remains the same i.e. the denominator quantity is unchanged but the distance is increased i.e. the numerator quantity is increased then the net quantity increases.

i.e. the speed will increase.

all it means is function 3