All credit cards are invitations to overspend, and some invitations to overspent are precursors of bankruptcy. Therefore, some credit cards are precursors of bankruptcy.
A) Deductive, invalid.
B) Deductive, sound.
C) Inductive, strong.
D) Deductive, valid.
E) Inductive, weak.

Question

Quizplus · Accepted Answer

The argument uses a deductive reasoning pattern, but it is invalid because the conclusion does not necessarily follow from the premises. Just because all credit cards are invitations to overspend and some invitations to overspend cause bankruptcy, it does not mean that all credit cards are precursors of bankruptcy. There may be other factors involved in causing bankruptcy besides credit card usage. Therefore, the argument is flawed.

All Credit Cards Are Invitations to Overspend, and Some Invitations