Adam posted in a thread about theoretical physics. in his post he refuted general relativity and cited a paper that was recently self-published by one person on her own personal website and had no references to other works in the field. which important question did adam not answer sufficiently when evaluating the cited paper?

The answer to the question: Which important question did Adam not answer sufficiently when evaluating the cited paper, would be, what is the validity, or trustworthiness, of the work cited, to support his position against a Theory that has already been tested and proven so many times and by so many experts in the field.

Explanation:

When writing a research paper, especially when throwing in a thesis that will refute knowledge that has already been proven and tested for so many years, and by so many experts in different fields, one major thing a writer must do is make sure that the sources he uses in his research, are trustworhy and valid. This means that these sources must be valid, showing the research behind them, the expertise and also how updated they are on knowledge that comes out. In this case, Adam makes a big mistake in using a paper that has been recenty self-pubished by a person, on her own website, and without the presence of references to back anything up, because, in a personal site, self-published at that, there are no limitations, or controls, to what can be published. Information can be false, an opinion, or simply invalid, and the lack of references, makes it simply an opinion, not verifiable, valid data. This source then, used by Adam is totally invalid and may invalidate his own research as well.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

16.) true

17.) true

18.) it doesn't say

19.) true

20.) false

explanation: