Final answer:
The Conciliatory Proposition of 1775 did not meet most of the demands of the American colonists, making the correct answer to the question 'false'.
Step-by-step explanation:
The Conciliatory Proposition refers to the attempts by the British Parliament to ease tensions with the American colonists in 1775. While it was intended to prevent further escalation of conflict, it did not fully satisfy the American colonists. This proposition aimed to address some grievances by allowing the colonies to tax themselves at Parliament's demand, but it did not give in to most of the demands of the American colonists, which included issues of representation in Parliament and the repeal of certain taxes.
Therefore, in response to the exercise question whether 'In the Conciliatory Proposition, the mother country gave in to most of the demands of the American colonists,' the correct answer is:
b. False