The dictionary definition for Letissmus Doris is a pair of large, roughly triangular muscles covering the lower part of the back, extending from the sacral, lumbar, and lower thoracic vertebrae to the armpits.
Look forward and never hold your breath
<u><em>Digestive</em></u> is a system prepares food for absorption into the bloodstream.So the answer for your question is Digestive.
Hope this helps:)
I would say D. beginning, early proficient and advanced competence as it is to do with throwing so is a physical skill so can be described in these ways according to the level of proficiency or competence exhibited by the sports person.