B
Below is a question with multiple-choice answers. Choose the correct option based on your reasoning.

### Question:
What can cause a moving object to increase its speed in a forward direction?

### Choices:
A. a force pushing on the object from the opposite direction
B. a force that continually acts on the object in the direction the object is moving
C. an increase in the mass of the object
D. a decrease in the mass of the object

### Answer:
