The Glencoe massacre caused more Highlanders to support-----and his descendants as the rightful kings of Scotland.
A. James II.
B. William II.
C. William III.
D. Charles II.

Hint:- On13 February 1692, the Massacre of Glencoe took place in the Highlands of Scotland. By 1690, the Jacobite rising of 1689 was no longer a serious military threat, But, unrest continued in the remote Highlands of Scotland with William.

Complete step by step solution:
The Glencoe massacre caused more Highlanders to support James II and his descendants as the rightful kings of Scotland. Around 30 members of Clan MacDonald of Glencoe were killed by government forces as the people of the clan failed to fulfill their pledge of allegiance to the new monarchs, William III of Scotland and Mary II. The King of Scotland James II reigns from 1430 to 1460 was a member of the House of Stewart who reigned as King of Scotland from 1437 until his death. He was crowned on 21 February 1437 at Holyrood Abbey by Abbot Patrick.

Hence, answer A is the right option.

Note: The brutality of the Glencoe Massacre was so massive that it shocked the whole Scottish society. William was also engaged in the Nine Years War, the Scottish government was under pressure to end it.