Question 3 Which of the following situations involves Priority being passed from the player performing the action to another player, I.E. will result in an opportunity for Reactions to be played? AThe Loose Canon triggering during its controller's Beginning Phase BMoving a unit from a battlefield to its base CDrawing a card during the Draw Phase DRecycling Runes to add Power to the Resource Pool

The correct answer is A: The Loose Cannon triggering during its controller's Beginning Phase.

According to the Riftbound rules and the provided FAQ:

• A (The Loose Cannon): Triggering an ability adds it to the chain and creates a Closed State (Rule 401.1, 377.3.b.1). Per FAQ 1611, a player receives priority when an opponent starts a chain via a triggered ability, which allows for reactions (Rules 338.1.b, 339.2, 359.3.c, 406.4).
• B (Moving a unit): Per FAQ 4243, a player does not receive priority for a reaction when an opponent moves a unit to a base or a battlefield they control, unless a specific "when I move" ability is triggered.
• C (Drawing a card): Drawing a card during the Draw Phase is a turn-based process (Rule 315.4, 413.2) and does not create a priority window or a chain for the opponent to react to.
• D (Recycling Runes): Recycling runes is a limited game action (Rule 429.4). Rule 429.2.a explicitly states that priority and focus do not pass when these abilities are finalized or resolved, meaning no opportunity for reactions is granted.

Note: I could not fully verify this ruling against the retrieved rules.