As Prime Minister, I worked closely with Ronald Reagan for eight of the most important years of all our lives. We talked regularly, both before and after his presidency, and I've had time and cause to reflect on what made him a great president. The use of "I" in this paragraph serves toA. emphasize Thatcher's close friendship with Reagan and her personal griefB. establish Thatcher's ethos as an authority on Reagan's private and personal lifeC. remind the audience of Thatcher's prominence on the world stageD. shift the focus of the eulogy away from Reagan and on to Thatcher herself