Answer:
The Throckmorton plot was a threat to Queen Elizabeth because it conspired to overthrow Queen Elizabeth I and bring Queen Mary of Scots to the throne.
Explanation:
- For the fulfillment of the intention of re-establishing Roman Catholicism, it was necessary for the radical English Roman Catholics to take down Queen Elizabeth I and crown Queen Mary of Scots as the queen of England.
- This conspiracy was revealed after a few suspicious attempts made for the said cause and the main conspirator, Francis Throckmorton was punished for it.