Which of the following is an example of something that undergoes acceleration while moving at a constant speed?

1.a man standing in an elevator

2. a car making a circle in a parking lot

3. none of these. an object that undergoes
an acceleration has to change its speed

4. a football flying in the air

5. a car moving straight backwards on the
road

A car making a circle in a parking lot is accelerating even when it's
moving with constant speed, because its direction is constantly
changing, and that's a form of acceleration.

Yeet yeet yeet yeet

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current