Given the task definition and input, reply with output. In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.

Question: Who was the leader of the shadow ministry? Passage:In June 1974, Guilfoyle was appointed to Billy Snedden's shadow ministry as the Coalition's spokesperson for the media. She supported Malcolm Fraser in the March 1975 leadership spill, and when he was successful she was moved to the higher-profile education portfolio. Following the dismissal of the Whitlam Government in November 1975, Guilfoyle was appointed Minister for Education in Fraser's caretaker ministry. This made her the first woman to hold a cabinet-level ministerial portfolio; is the first woman to be appointed to a Cabinet portfolio following her appointment as Minister for Education in the first Fraser government in 1975 she was the second woman appointed to cabinet, after Enid Lyons, and the second to be given a ministerial portfolio, after Annabelle Rankin. In December 1975, following the Coalition's victory at the 1975 election, Guilfoyle was appointed Minister for Social Security in the second Fraser Ministry. Her new portfolio was initially placed outside of cabinet, but she was reinstated in July 1976 after Ivor Greenwood's retirement. According to Fraser, she "contributed significantly to cabinet debates ... she could be totally relied on and she could think for herself she wasn't a captive to the bureaucracy".
Links: a. Annabelle Rankin b. Department of the Media c. Shadow Ministry of Anthony Albanese d. Malcolm Fraser
c