1c) Yes, the people of England have a say in whether or not their taxes are changed. This is evidenced by the clause stating that decisions about creating or collecting taxes will be made by a vote of the majority rule of the representatives of the people. The text specifically mentions that the great council, made up of representatives, will convene and make these decisions collectively.
1d) The Magna Carta limits or restricts the power of the King according to this excerpt by clearly stating that the King shall follow the will of the great council and cannot raise or levy taxes on his own accord. This indicates that the authority to impose taxes is taken away from the King and placed in the hands of the representatives of the people, emphasizing the principle of consent and accountability in governance.