The correct answer is: A. A conditional expression.
A conditional expression is an expression that evaluates to one value if a condition is true, and another value if the condition is false. In this case, the condition is whether the value in the [Age] cell is greater than 65. If it is, the expression evaluates to “Senior”; if it is not, the expression evaluates to “Adult”.
Algebraic expressions are expressions that are made up of numbers, variables, and operators. They are used to represent mathematical relationships. For example, the expression $x^2+y^2=1$ represents the equation of a circle.
Something that belongs in a Microsoft Excel book is a formula. Formulas are used to calculate values in cells. For example, the formula =SUM(A1:A10) will calculate the sum of the values in cells A1 through A10.
A financial expression is an expression that is used to calculate financial values. For example, the expression $P=I\frac{1+r^n}{r}$ is the formula for calculating the present value of a loan.
In conclusion, the expression (IF [Age]>65, “Senior”,”Adult”) is an example of a conditional expression.