Question

where are the brood cells containing the young stage generally built in a honey comb?​

Answer 1

When the Queen lays an egg in a cell, the egg is in that stage for a mere 3 days. The next stage is larva, and worker brood are in the larval stage for 6 days. At 9 days the cells in which the larva are housed are capped. The bees then pupate in these cells, and remain there, until they hatch.

Answer 2

These broad cells are chambers of honey comb