Two pipes move the same amount of ideal fluid in the same amount of time. one pipe has a 2 in. diameter; the other has a 3 in. diameter. in which pipe is the fluid pressure higher, assuming that all other conditions are the same?
a)3-in. pipe
b)2-in. pipe
c)same pressure in both
d)cannot be determined for an ideal fluid

By Bernoulli Theorem, We know, that for any two points in the pipe, total energy would be same. 

Pressure Energy + K.E. of 1st pipe = Pressure Energy + K.E. of 2nd pipe
[ No need to consider Potential energy as height isn't mentioned] 
P₁ + mv₁²/2 = P₂ + mv₂²/2

So, we know, P + mv²/2 = constant

As value of kinetic energy is larger in larger in 2 in. pipe [ 'cause area is indirectly proportional to velocity ], Value of pressure energy would be smaller in it. So, pressure energy will be higher in the pipe of 3 in.

In short, option A would be your correct answer.

Hope this helps!