Answer:
B. INVISIBLE HAND
Explanation:
Adam Smith theory of 'Laissez Faire' favours free capitalism.
The theory states that free markets guided by individual self interest create best over all socio economic wealth & welfare. Producers make goods satisfying society needs, to earn maximum profit, & free competition keeps markets efficient.
Any distortion in markets is automatically re-stabilised by - 'self interest' & 'free 'competition' as components of 'INVISIBLE Hand'. Markets Invisible Hand guided by 'self interest' & 'competition' is best welfare maximising tool, no government intervention is needed.