Final answer:
Team B wins the tug of war with a total force of 105 N, which is 5 N greater than Team A's total force of 100 N. The provided options do not accurately reflect the correct difference in net force.
Step-by-step explanation:
To determine which team won the tug of war, we must calculate the total force exerted by each team and compare them. For Team A, with four people each pulling with 25 N of force, the total force is 100 N (4 members × 25 N/member). For Team B, with three people each pulling with 35 N of force, the total force is 105 N (3 members × 35 N/member).
Team B exerts a greater total force on the rope, so they win the tug of war. However, the difference in their net force compared to Team A is 5 N greater, not 30 N or 45 N as given in the options. Therefore, none of the options accurately describes the outcome based on the forces provided.