Universal components of viruses Steps:

• Identify key molecules in viruses: all have genetic material and protein capsid.
• Note that envelopes are not universal, as many viruses lack lipid membranes.
• Assume 1, 2, 3 refer to common options like DNA, protein, lipid, but specifics are undefined.
• Conclude ambiguity prevents precise selection.

Not enough information to confirm D without defining 1, 2, 3.

Why the others are wrong:

• A, B, C: Cannot evaluate without molecule identities.

Final answer: Not enough information.