please explain these two sentence completion ques

<ol>
<li><p>Along standing theory about the migration of green turtles was <repudiated> by an innovative marine biologist who graciously defused potential <acrimony> by dedicating her work to the original researcher.</acrimony></repudiated></p></li>
<li><p>The audience recognized the officer’s characteristic <humility> when he attributed his achievements to <fortune> rather than bravery.</fortune></humility></p></li>
</ol>

<p>humiliy=humble (?)</p>

<p>I don’t have explanations for these…
Thanks.</p>

<p>[repudiate</a> - Definition from the Merriam-Webster Online Dictionary](<a href=“http://www.merriam-webster.com/dictionary/repudiate]repudiate”>Repudiate Definition & Meaning - Merriam-Webster)</p>

<p>[acrimony</a> - Definition from the Merriam-Webster Online Dictionary](<a href=“http://www.merriam-webster.com/dictionary/acrimony]acrimony”>Acrimony Definition & Meaning - Merriam-Webster)</p>

<p>[humility</a> - Definition from the Merriam-Webster Online Dictionary](<a href=“http://www.merriam-webster.com/dictionary/humility]humility”>Humility Definition & Meaning - Merriam-Webster)</p>

<p>[fortune</a> - Definition from the Merriam-Webster Online Dictionary](<a href=“http://www.merriam-webster.com/dictionary/fortune]fortune”>Fortune Definition & Meaning - Merriam-Webster)</p>

<p>These sentence completions shouldn’t be too difficult using the positive/negative or definition-phrase technique.</p>

<p>Now, the first one is repudiated and acrimony because they’re saying that research work conducted by the marine biologist REFUSED to accept BITTERNESS when she was dedicating it to her original mentor.</p>

<p>The second one is trying to express the fact that the individual’s UNPROUD when he attributed his achievements to LUCK rather than to his own bravery. Usually, when one accomplishes something, it is because he or she is brave. Like taking the risk to improve something. The person must show strength, not just by fortune that took him/her up there.</p>

<p>Now, the first one is repudiated and acrimony because they’re saying that research work conducted by the marine biologist REFUSED to accept BITTERNESS when she was dedicating it to her original mentor</p>

<p>That’s not what the first SC is saying. Repudiated means to refuse to accept. Actuallly, the answer given doesn’t make any sense at all. How could the marine biologist repudiate, or refuse, a theory by the original researcher if that biologist dedicated her life to the original researcher’s work?
To the OP: Are you sure that’s the answer to the first SC?</p>

<p>I think so…
Here are other choices…

  1. instigated, rancor
  2. renounced, approval
  3. displaced, attribution
  4. enhanced, alteration
  5. repudiated, acrimony</p>

<p>Why do you guys think that the words do not work contextually? It seems fine to me.</p>

<p>Oh im sorry. I read it wrong! It is definitely 5. (E)</p>