Answer:
D.It resolves the major conflict of the poem by showing that Peterkin has found something by the rivulet.
It is absolutely true that when lifting weights or spotting a weight lifter, the individual must always keep a straight back. The correct option among the two options that are given in the question is the first option.If the weight lifter by any means makes the mistake of bending the back, then there is every possibility that the lifter will get hurt.
The correct answer is letter B
Olfactory sense is one of the five senses through which odors are perceived. The nose, equipped with olfactory nerves, is the main organ of smell. The olfactory nerves are also important to distinguish the taste of substances that are inside the mouth.
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In the nasal cavities, the particles dissolve in the mucus, reaching the olfactory hairs of the olfactory cells. In these, the odor is transformed into nerve impulses, which are transmitted by their axons to the olfactory bulb, followed from this to the brain by the olfactory nerve.
Transduction is a transformation of physical or chemical stimuli into electrical potential by sensory receptors. Whether neuronal or secondary sensory cells, all highly specific.
The correct answer to this open question is the following.
According to your question, there are only two parts to be answered, a) and b).
Being that the case, we can comment on the following.
A) This is an observational study and not an experiment because the research was only limited to observation, participants never receive any kind of treatment or another interaction to experiment with them.
B) Who were the subjects of the study?
The subjects of this study were women aged 65 and older who were tracked for several years. The observation revealed that those women who had a vitamin B12 deficiency were twice as likely to suffer severe depression as those who did not.
So, according to the American Journal of Psychology, these were the women observed during the study. There were no more experiments, interactions, or activities applied to them in order to consider it an experiment.
Let's remember that in order to consider an experiment as such, there has to be another component of the study, and the experimental part of it that has to be tested and proved passing the scientific method to conclude in something valid.