To determine the rows where the expression (p ∧ q) ∨ (p ∧ r) is true, we can construct a truth table with columns for p, q, r, p ∧ q, p ∧ r, (p ∧ q) ∨ (p ∧ r), as shown below:
```
p | q | r | p ∧ q | p ∧ r | (p ∧ q) ∨ (p ∧ r)
----------------------------------------------
T | T | T | T | T | T
T | T | F | T | T | T
T | F | T | F | T | T
T | F | F | F | F | F
F | T | T | F | F | F
F | T | F | F | F | F
F | F | T | F | F | F
F | F | F | F | F | F
```
The rows where the expression (p ∧ q) ∨ (p ∧ r) is true are the first, second, and third rows, where the last column is true. Therefore, the rows where the expression is true are:
```
p | q | r
--------
T | T | T
T | T | F
T | F | T
```