1. A predicative nominative is a noun or a pronoun which follows a linking verb and refers to something before that verb. In your case, the correct answer is B, because "a shelter" goes after the linking verb "is", and refers to "a lean-to".
2. A participle has the form of infinitive + ing. In this case, the answer is D, flourishing.
The answer is hyperbole, because it exaggerates her joy
It's either internal or psychological
<span>THE administration of Theodore Roosevelt was in some respects the first modern presidency. It is with Roosevelt that the most distinctive twentieth-century characteristics of the executive office emerged as more or less permanent traits. Roosevelt put the presidency and the federal government at the center of peacetime political action. He made the White House a national focus for the social mood and did much to set the moral tone of his times. He exploited the president's powers as commander in chief to initiate a forceful, independent foreign policy, deploying military forces abroad without direct (or any) consultation with Congress. And he extended presidential initiatives in policymaking to the domestic scene on an unprecedented scale, putting forward reform proposals for congressional action and using executive orders to promote major innovative programs.</span>
