This one is clearly not correct.

It's not critical because it's not equal to 1.

It's not supercritical because it's not greater than 1, but

how about the last statement.

The ultimate depth is more than 2 meters.

To consider that we remember the specific energy diagram here.

So in this case here is our critical depth, it's a subcritical flow so

therefore the point could be here for example.

It's deeper than the, the subcritical depth.

The alternate depth, however, is supercritical, which is less than that.

It cannot be deeper.

So the last statement here, the alternate depth is deeper or

more than 2 meters, is also obviously incorrect.

The only possible answer is A, the flow is subcritical.

Because they gave the equation for

hydraulic jumps I'll also cover that term briefly.

And a hydraulic jump is a sudden change in a flow depth from

high velocity shallow to deeper water slowly moving.

And the hydraulic jump is characterized by much air entrainment and

energy dissipation, looking something like this.

And these fairly often occur

in out in channels where you have a sudden change in the bottom slope or

they might be intentionally designed in an open channel flow to dissipate energy.