Sentence Completion Help

Test Preparation SAT Preparation
1

<ol>
<li>The scientist maintains that any hypothesis must explain what has already been discovered and must be constantly ___ by future findings.
A. confirmed
B. invalidated
C. disregarded
D. equaled
E. reversed</li>
</ol>

<p>(I thought it was B invalidated but im not completely sure...)</p>

<ol>
<li>Most Antartic animals ___ depend on the tiny shrimp like kirll, either feeding on them directly, like the humpback whale, or consuming species that feed upon them</li>
</ol>

<p>A. seldom
B. ultimately
C. preferably
D. immediately
E. marginally</p>

<ol>
<li>Traffic speed limits are set at a level that achieves some balance between the danger of ___ speed and the desire of most people to travel as quickly as possible.</li>
</ol>

<p>A. marginal
B. normal
C. prudent
D. inadvertent
E. excessive</p>

<p>(I thought it was D since its the danger of <em>not caring/inadvertent</em> but i also wasnt sure because E could also make sense...)</p>

2

<ol>
<li><p>Confirmed</p></li>
<li><p>Ultimately, they depend on them one way and if not that then indirectly.</p></li>
<li><p>Excessive, it’s asking for a balance so that would definitely work</p></li>
</ol>

3

<p>I don’t understand, how is #1 confirmed?</p>

4

<p>Do you understand what a hypothesis is?</p>

5

<p>yes it is kind of like a guess scientists make before going further into the experiments and it can later be proved or disproved</p>

6

<p>‘What has already been discovered’ and ‘future findings’ refer to the same thing when talking about any experiments conducted by scientists. Since a hypothesis must be valid for any experiment that deals with it, the hypothesis must constantly be ‘confirmed’ by the experiments.</p>

<p>The answer is not ‘invalidated’ because that would mean the hypothesis no longer applies to every experiment, which by default means that the hypothesis is wrong.</p>