iVillage is a website for women that encourages its users to discuss health and beauty, parenting, personal finances, career management, and relationships. This website is an example of

A web community.

Explanation:

A web community can be defined as an online or virtual community that comprises of a group of people (members) sharing common or similar interests and as such come together to communicate or interact frequently with one another on topical issues over the internet. Some of the channels used by the members to communicate regularly with one another are blogs, servers, bulletin boards, forums etc.

In this scenario, iVillage is a website for women that encourages its users to discuss health and beauty, parenting, personal finances, career management, and relationships.

Hence, this website is an example of a web community.

answer; (1) blank; decreases; ///blank(2) increases; ///blank(3)increases;

b. take periodic breaks and alternate between tasks.  

will increase work efficiency, and avoid health issues.