Mary thinking her astrological sign, Leo, is a perfect fit for her personality is a belief in pseudoscience because there is not scientific evidence confirming such beliefs. The answer is the second option.
The correct answer is A. Mike joined a group that studies phrenology.
Explanation:
In science, a "pseudoscience" refers to practices and believes that have been claimed scientific but have not been proved or do not follow the scientific method to be considered as real science. Because of this pseudosciences are mainly considered as invalid and are not officially recognized by science. An example of this is astrology as this states the movements of celestial bodies influence human and life and therefore can be used for prediction. Considering this, the statement that is an example of pseudoscience is "Mike joined a group that studies phrenology" because phrenology is a set of beliefs and practices that focus on measuring the skull to determine mental abilities, issues, etc but this was never proved through the scientific method and therefore nowadays is just a pseudoscience.
Due to electron deficiency in a metal cation, they cannot form a covalent bond beacuse it means to share electrons. By contrast metal cation seek for electrons. In an ionic bond, one atom give electrons, while another atom recevie electron. Because of that, this is the better option to metal cations.
