Are players permitted to use their bodies to shield the ball during a game?

Players are indeed permitted to use their bodies to shield the ball, and this practice is a fundamental aspect of soccer. When players position themselves between the ball and an opponent, they are using their body to protect the ball while maintaining control. This action is allowed as long as it is done within the rules of the game, specifically without using excessive force or engaging in a manner that could be considered a foul.

Shields or body blocks are typically acceptable when a player is stationary or moving with the ball as part of a fair play strategy. The emphasis on not using excessive force means that while players can use their bodies, they must do so in a way that does not endanger other players or provoke a physical confrontation that would lead to a foul.

The other options misrepresent the rules: using hands is not a requirement when shielding, and players are certainly allowed to use their bodies. Also, the referee's permission is not a factor in this action during normal play, as shielding is a part of the game as long as it adheres to the principles of fair play.