Final answer:
In a judicial foreclosure, possession during the period of redemption would be held by the foreclosure buyer if the truster fails to exercise their right to redeem.
Step-by-step explanation:
In a judicial foreclosure, if the truster fails to exercise their right to redeem, possession during the period of redemption would be held by the foreclosure buyer. The foreclosure buyer is the entity or individual who successfully bids on the property during the foreclosure sale. Once the redemption period expires and the truster fails to redeem the property, the foreclosure buyer becomes the legal owner and takes possession of the property.