The scapula articulates with the and the multiple choice acromial end of the clavicle; trochlea of the humerus acromial end of the clavicle; head of the humerus sternal end of the clavicle; head of the humerus sternal end of the clavicle; trochlea of the humerus acromial end of the clavicle; sternal end of the clavicle

head of the humerus, Acromial end of the clavicle

Explanation:

The shoulder is made up of three bones: the scapula, the clavicle and the humerus (upper arm bone).  Two joints in the shoulder allow it to move: the  acromioclavicular joint, where the highest point of the scapula (acromion) meets the clavicle at its acromial end (the sternal end of the clavicle is bounded to the sternon), and the glenohumeral joint. The scapula also bounds to the head of the humerus, it is, the distal superior end.

b

explanation:

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.