In figures $(a)$,$(b)$ and $(c)$,which appears more accurate and why?

(A) Figure $(a)$ is the most accurate representation.
This is because plant shoots exhibit negative geotropism (they grow away from the gravitational pull of the Earth,i.e.,upwards).
Conversely,plant roots exhibit positive geotropism (they grow towards the gravitational pull of the Earth,i.e.,downwards).
Therefore,in a horizontally placed pot,the shoot will bend upwards and the roots will bend downwards to align with these natural tropisms.