Given
A positive charge dropped into the middle of the electric field in the picture
To find
Which way the positive charge would move?
Step-by-step explanation
Electric fields move out of a positive charge and into a negative charge.
So charge B is negative and A is positive.
We know like chrge repel like charge and attract unlike charge.
So the positive charge would move towards B.
Conclusion
The correct answer is B. Towards charge B