The correct answer is C. Great Britain did not allow the colonists to participate in government
Gandhi was unhappy because when the British granted India her independence, the Indian Independence Act of 1947 partitioned British India into two: India and Pakistan. His vision of a free India was a harmonious co-existence of the Hindus and Muslims in one nation.
The correct answer is amending the Constitution.
In Article V of the US Constitution, it discusses how there needs to be a 2/3rds vote in both the House of Representatives and the Senate. Along with this, the possible amendment needs to be ratified (aka approved) by at least 3/4ths of the states within the US. If both of these requirements are met, then the bill becomes an amendment.