The phrase 'answer a plea' is correct and can be used in written English.
You can use it when referring to responding to an urgent request or an entreaty. For example, "The government answered the plea from the charity and offered more support."
The alliance was answering a plea from Iyad Allawi, Iraq's new leader, backed by a surprise visit to Istanbul by his foreign minister.
A few miles later, a woman in a corporate parking lot answers a plea for help with a question: "Do you have a beach pass?" Mr. Leydon never had a pass, which Greenwich residents have to pay for.
Administration officials said military options were almost certainly off the table, but the United States did airlift Georgian troops stationed in Iraq back home, answering a plea from the Georgian government and prompting a sharp response from Russia.
Blues supporters had answered a plea from the region by turning up on Friday and then again on the morning of the match to clear thick snow off the Arms Park pitch.
So I answered a plea from the Community of Sant'Egidio, a worldwide Catholic prayer and charity organization, to write a letter of solidarity to a mentally-disabled death row prisoner named Johnny Paul Penry.
He closed his answer with a plea to the Tea Party, declaring: "I'll keep faith with them and say no earmarks, but I need the Tea Party to keep faith with me.
This insight into the potentially dramatic consequences of heuristic invisibility of the most vulnerable must be answered by a plea for a widely informed, plural and egalitarian practice of poverty and futures research – a practice that focuses especially on "suppressed" and "under-represented" phenomena from the margins of a society [37].
The senator seemed to be participating in a different debate from everyone else, a debate in which even questions about women's health got answered with a plea for war in the Middle East.
He looks horrified, and his answer sounds more a plea than a statement.
Later David Cameron, answering a personal plea from an ordinary reader, said: "I want to do everything I can to support commitment and I'm open to changing things further to guarantee equality".
His domestic season was interrupted further by the Africa Cup of Nations, when he answered a personal plea from the president of Togo to lead the country in South Africa.
