 
 <translate> The question is: What ccurs when many muscles contract a little bit all at once?
Options:
- (A) heat production
- (B) heat loss
- (C) sweating
- (D) permineralization
- (E) hypothermia
- (F) resistance
- (G) cramping
- (H) heat energy
Step-by-step reasoning process: Shivering occurs when many muscles contract a little bit all at once. Heat production is increased by shivering and non-shivering thermogenesis . Heat production occurs when many muscles contract a little bit all at once.
 <ibo> Ajụjụ bụ: Gịnị na-eme mgbe ọtụtụ akwara na-agbakọta ntakịrị n'otu oge? Nhọrọ: - (A) okpomọkụ mmepụta - (B) okpomọkụ ọnwụ - (C) ọsụsọ - (D) ihe ndị na-eme ka mmadụ ghara ịdị ndụ - (E) ala okpomọkụ - (F) iguzogide - (G) nkwonkwo - (H) ike okpomọkụ Ụzọ e si atụgharị uche n'ihe nke nta nke nta: Ịma jijiji na-eme mgbe ọtụtụ akwara na-ama jijiji n'otu mgbe. A na-amụba mmepụta okpomọkụ site na thermogenesis na-ama jijiji na nke na-anaghị ama jijiji. A na-emepụta okpomọkụ mgbe ọtụtụ akwara na-agbakọta ntakịrị n'otu mgbe. 