Question

on a negatively grounded system, the jump pack negative clamp should be attached to the __________when engine starting. fuel line positive battery terminal negative battery terminal heavy gauge metal part of the frame or body

Explanation:

When jump - starting a negatively grounded system, attaching the negative clamp to a heavy - gauge metal part of the frame or body (instead of the negative battery terminal) helps to reduce the risk of sparks near the battery (which can release flammable hydrogen gas). Attaching to the fuel line is dangerous as it can cause a fire. Attaching to the positive terminal is incorrect for the negative clamp.

Answer:

Heavy gauge metal part of the frame or body