Question

open - end wrenches
an open - end wrench is identified by its \open ends\. the ends grip a bolt or nut on two faces (or flats). when force is applied to the wrench, contact is made with only two faces (flats), thus less force is transferable to the bolt or nut, compared to a box - end wrench that grips on all faces.
because of its open ends, the wrench can fit onto the bolt or nut from the side, making the open - end useful in situations where space is limited.
the open - end wrench has different sizes on each end. the open - end wrench head is usually at a 15° angle to the handle, enabling an extra 15° of movement when the wrench is turned around on its axis. open - end wrench sizes vary. special tools can be designed using an open - end; providing access to objects that are otherwise difficult if not impossible to reach with a box - end wrench or socket.
3
what is true regarding the transfer of force using an open - end wrench?
an open - end wrench can transfer a relatively large force.
an open - end wrench transfers a relatively small force.

Explanation:

The text states that when force is applied to an open - end wrench, contact is made with only two faces of the bolt or nut, and less force is transferable compared to a box - end wrench that grips on all faces. So, an open - end wrench transfers a relatively small force.

Answer:

An open - end wrench transfers a relatively small force.