What is a portfolio as used in the early childhood curriculum?
A. A form of informal assessment that uses the engagement of a child in discussion through questions
B. A form of informal assessment that uses a collection of a child's work samples and other products
C. A form of informal assessment that focuses on a sequence of events over a given point in time
D. A form of informal assessment that involves watching a child in an attempt to gather information on his or her hehaviors