A strategy that attempts to reduce the overall risk of an entire investment portfolio by investing in a variety of assets is called

Portfolio diversification

Explanation:

Portfolio diversification is the process of holding different asset and security classes in order to minimise the non systemic risk of the portfolio

Non systemic risk are risks that can be diversified away. they are also called company specific risk. Examples of this type of risk is a manager engaging in fraudulent activities.

to diversify assets in the portfolio should have zero correlation

answer: a. the kind of population living in your neighbourhood.

the census explorer data tool by the us census bureau allows the user to zoom in on any neighbourhood within the united states and find the kind of people residing in that by race and age.  

the tool needs to needs to be used twice – once in order to find what type of people reside in a neighbourhood, and then to see the age groups of the people in the same neighbourhood.

answer///ability to capture the attention of users;