Respuesta :
Helmets must not prevent seeing or hearing.
A general principle is almost like a rule. It is an agreed upon standard for a certain thing. In this case, the general principles or standards are for sports helmets. While it is a good idea in some sports for the helmet to protect the face, like the helmet of a hockey goalie, it is not necessary. In biking, horseback riding, baseball, and many other sports, face protection is not a necessity. However, helmets should not prevent seeing or hearing. They may reduce a person's field of vision or obstruct hearing slightly, but they should not prevent it completely. The other options about the type of plastics and materials are not guiding principles because the statements talk about possibilities not something that is consistent all the time.
The key detail that supports the main idea that there are general principles that guide sports helmet design is:
Option B
- Helmets must not prevent seeing or hearing.
A general rule is almost similar to a standard. It is an agreed upon standard for something certain. In this case, the general standards or standards are for sports protective caps.
While it is really smart in certain games for the head protector to secure the face, similar to the cap of a hockey goalie, it isn't necessary. In trekking, horseback riding, baseball, and many different games, face assurance isn't a need.
Notwithstanding, protective helmets ought not forestall seeing or hearing. They may lessen an individual's field of vision or block hearing somewhat, yet they ought not forestall it totally.
Different choices about the kind of plastics and materials are not core values because the statements talk about conceivable outcomes not something reliable all the time.
For more information, refer the following link:
https://brainly.com/question/20449533
