Final answer:
Penelope's skepticism about the man claiming to be her husband Odysseus can be attributed to a belief that he might be an imposter, doubts about her own memory, and a fear that he has changed during his absence.
Step-by-step explanation:
Penelope's skepticism about the man claiming to be her long-lost husband, Odysseus, can be attributed to several factors. One possible motivation is that she believes he is an imposter trying to take over her kingdom (option a). Another possibility is that she doubts her own memory and is unsure if he is truly her husband (option b). Additionally, she may fear that he has become a different person during his absence (option d). However, there is no evidence to suggest that Penelope is in love with another man and doesn't want Odysseus to return (option c).