Answer:c- It will still weigh 15 grams
Explanation:
Given
Fifteen gram of a liquid plastic are frozen in a physical change that increases the volume.
It is certain that the mass of plastic will remain fifteen grams despite the increase of volume as density of the plastic will automatically adjusted to get same mass

A University is an Institution that offers undergraduate and graduate degrees. Universities offer graduate programs leading to a masters degree or a Ph.D.
A College is a smaller institution that typically offers undergraduates degrees. Some colleges such as community colleges and junior colleges, May Offer only two year degrees Hope I helped
I believe the answer is:
random sample of the town's population
A mix of participants that reflect your town's makeup
Random sample is needed in order to ensure that the researchers do not obtain only the subjects that is close to them. Mix of participants is needed in order to ensure that the sample population are not taken from group with close similarties in behaviour.
The ANA Code of Ethics for Nurses serves the following purposes: It is a succinct statement of the ethical obligations and duties of every individual who enters the nursing profession.
<h3>What is ANA Code of Ethics for Nurses?</h3>
The following goals are accomplished by the ANA Code of Ethics for Nurses: It is a concise description of the moral requirements and responsibilities of each person who works as a nurse. It is the uncompromising ethical standard for the industry. It is a manifestation of nursing's concept of its social responsibility.
The nurse has obligations to both themselves and others, including the duty to advance health and safety, uphold morality and competence, and keep growing personally and professionally.
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