<h3><u>
Answer:</u></h3>
Hence, the expression for Samantha's age is given by:
Fraction z over 2 + 3
<h3><u>
Step-by-step explanation:</u></h3>
It is given that:
Samantha's age is 3 years more than half her uncle's age.
Her uncle's age is given to be z years.
So, Samantha's age can be expressed mathematically in the form of algebraic expression as:

( Since half the uncle's age means z/2 and 3 more than that quantity is:
z/2+3)
Hence, the correct option is: i.e. the expression for Samantha's age is given as:
Fraction z over 2 + 3