To find the total number of water bottles Brinda and her three friends give out during the cycling race, we can set up the following equation.
Let \( w \) represent the total number of water bottles.
Since Brinda and three friends are giving out water bottles, that makes a total of 4 people. Each person gives out 38 water bottles. So, the equation is:
\[ w = 4 \times 38 \]
Now, let's calculate:
\[ w = 4 \times 38 = 152 \]
Therefore, the total number of water bottles they give out during the race is 152 water bottles.
The correct response is:
152 water bottles.