Final answer:
The correct translation of the word phrase '3 multiplied by the sum of a number and 5' is option D) 3(X+5).
Step-by-step explanation:
The correct translation of the word phrase '3 multiplied by the sum of a number and 5' is option D) 3(X+5).
In this expression, the number is represented by X. The sum of the number and 5 is represented by (X+5). Multiplying 3 by the sum gives us 3(X+5).