Final answer:
The item from The Binding of Isaac Shop item pool that modifies all bombs to yield 1+1 bombs is Bogo Bombs, which is very beneficial for players who frequently use bombs.
Step-by-step explanation:
In The Binding of Isaac, following the recent update, the item that now modifies all bomb pickups to yield 1+1 bombs when found in the Shop item pool is Bogo Bombs. Options B) Bogo Bombs correctly answers this question. Bogo Bombs is an item that, when picked up, will ensure that every bomb pickup you find will actually provide two bombs instead of one, which can greatly increase the player's supply of bombs throughout their run of the game. This item is especially useful for players who rely on bombs for both offensive strategies and to uncover secret rooms or hidden items within the game environment.