Three elements having conductance G1, G2 and G3 are connected in parallel. Their combined conductance will be:

Correct option is D

· Conductance (G) is the reciprocal of resistance (R) :
G=1/R
· In a parallel connection, the total conductance is the sum of individual conductance, similar to how resistances add in series:
G total  = G1+G2+G3