Answer:
B) an implied warranty of fitness for a particular purpose.
Step-by-step explanation:
Sigrud bought spiked mountain climbing shoes, so she could reasonably expect that the shoes would be useful when climbing a mountain. The fact that the spikes came out while she was on the mountain side, isn't exactly what she was expecting when she purchased them. If you buy something that is supposed to satisfy an specific need or purpose, the seller is providing an implied warranty that the good will actually be fit to satisfy that specific need or purpose.