Plants grown in typical soil are the control.
<h3><u>Explanation</u>:</h3>
The experiment is a process which includes the testing of effects several substances on a known event. Here in this experiment, the effect of salt concentration in soil on the plants are to be studied.
Control is a set of results that are kept for better verification of the results of the experiment. Here the control is kept in ideal or typical conditions and the effect on the plants are tallied with that of plants from experiment.
So the control here should be those plants which are grown in normal soil. Or soil of the environment where the plants are indigenous.
The scientist who refuses to consider new evidence, assuming he or she is not biased or incompetent could do it because if there is a big amount of evidence indicating otherwise, this one new piece of evidence is unlikely and they prefer to wait for more evidence or for analysis of whether this current evidence is not false.
thus this scientist is being skeptical (practicing skepticism) by ignoring this new evidence.
I Think The answer is a and b i hope it helps if I’m wrong I’ll fix it for you
The punnet square would look like this
b. t
B Bb. tB
T Tb. Tt
a chestnut trotter would have a Tb or 25%
