What terms does a financial institution specify for GICs? Why are rates on GICs higher than those

Question:

What terms does a financial institution specify for GICs? Why are rates on GICs higher than those on savings accounts? What factor would most affect your choice of date on a GIC?
Maturity
Maturity is the date on which the life of a transaction or financial instrument ends, after which it must either be renewed, or it will cease to exist. The term is commonly used for deposits, foreign exchange spot, and forward transactions, interest...