Which of the following is a semi arch breed?

The English Lop is classified as a semi arch breed due to its distinctive body shape and characteristics. Semi arch breeds typically feature a body that has a moderate arch, which is not as extreme as the full arch breeds but more pronounced than the compact breeds. The English Lop exhibits a long, refined body that still maintains a rounded form, making it a prime example of this classification. The breed is also known for its large, droopy ears and gentle temperament, which enhances its appeal among breeders and exhibitors.

In contrast, the other breeds mentioned do not fit the semi arch description as closely. Mini Lops and Holland Lops are characterized by a more compact, rounded body, typically classified as compact breeds. Rex rabbits have a similar compact type but are also recognized for their unique plush fur. Thus, the defining features of the English Lop conform to the characteristics of a semi arch breed more accurately than those of the other options.