Final answer:
Enid Lyons was the first woman to be elected to the Australian House of Representatives in 1943.
Step-by-step explanation:
The first woman to be elected to the Australian House of Representatives was Enid Lyons. She was elected in 1943 and was a trailblazer for women in Australian politics. Before her, other notable women were elected to legislative positions in different countries, such as Agnes Campbell Macphail, who became the first woman elected to the House of Commons in Canada in 1921. However, the correct answer to the student's question is Enid Lyons, who is none of the other options listed (B) Julia Gillard, (C) Dame Margaret Guilfoyle, or (D) Kathy Sullivan.