Question

line wrench
a line wrench is a special type of wrench designed especially for loosening pipe and cable fittings. resembling a combination between a box - end and open - end wrench. this wrench design grips the nut on more edges, so you can apply more force to either loosen or tighten.
line wrenches are commonly used to loosen/tighten brake, power steering, transmission,engine oil cooler line fittings and cable ends. an open end wrench should not be used to initially loosen these types of connections, because the risk of slipping and damaging the fitting is considerable.
1
how can you identify a line wrench?
a line wrench has a large opening that grips the fitting on two faces.
line wrenches always have an \s - bend\ handle.
the ends of the wrench resemble a combination of an open and box - end design, having a small opening with more edges to grip the faces of the fitting more securely.

Explanation:

The text states that a line wrench resembles a combination between a box - end and open - end wrench and grips the nut on more edges. The third option correctly describes this characteristic of the ends of the wrench. The first option about gripping on two faces is incorrect as it grips on more edges. The second option about the "S - bend" handle is not mentioned in the text as a identifying feature.

Answer:

The ends of the wrench resemble a combination of an open and box - end design, having a small opening with more edges to grip the faces of the fitting more securely.