A. <span>Christine ran slower than her sister.
<em>Slower </em> is comparing Christine's speed to the speed of her sister.
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A search engine is a program that searches/identify items in a database which corresponds to keywords specified by the user. A meta search engine is an online information retrieval tool that uses data of a web (search English) and that makes its own results. A subject directory is a service which offers a collection of links to the internet which is posted by creators. Hope this helped!
Answer:
The writer presents the differences between traditional and modern society in the matter of pregnancy, childbirth and childbearing.