Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage

In late 1997, the Pacific Lumber Company was planning to cut down a 600-year-old, 61-metre-tall redwood tree in California, USA. To (14) ______ the tree, people camped in tents near it but, as winter approached, they went home.

Tree lover Julia Hill decided that she had to stay to (15) __________ the company from cutting down the tree, so she climbed it. Julia's 'home' was a 2-by-3-metre tree house where she slept, cooked meals and gave interviews on her phone. Friends visited her nightly and supplied her with food in a bucket. (16) ________ she had thought she might stay up there for perhaps a month, she stayed for much longer, nearly two years.

Julia had (17) ___________ famous all over the world. It ended on December 17. 1999. The Pacific Lumber Company received $50,000, and the tree was (18) ________ to live. Finally, Julia was able to climb down and go home.