Question

what are the four main pieces that compose a spacesuit?
the face plate, the neck brace, the body, and the extremities
the helmet, upper torso, lower torso, and the primary life-support subsystem backpack
the breathing apparatus, the torso, the head gear, and the shoes
the helmet, the waist pack, the backpack, and the primary life-support fanny pack

Explanation:

To determine the four main pieces of a spacesuit, we analyze each option:

• The first option (face plate, neck brace, body, extremities) does not align with standard spacesuit components.
• The second option (helmet, upper torso, lower torso, primary life - support subsystem backpack) matches the typical main components of a spacesuit. The helmet protects the head, the upper and lower torso cover the body, and the primary life - support subsystem backpack provides essential life - support functions.
• The third option (breathing apparatus, torso, head gear, shoes) is incorrect as it misrepresents the standard components and includes non - standard or overly specific parts.
• The fourth option (helmet, waist pack, backpack, primary life - support fanny pack) is incorrect as waist pack and fanny pack are not main components of a spacesuit.

Answer:

B. the helmet, upper torso, lower torso, and the primary life - support subsystem backpack