The pectoral girdle supports the
arms
legs
skull
thoracic cage

Option A. "Arms"

Explanation:

Pectoral girdle is also known as shoulder girdle, are the bones that attach upper limb to the axial skeleton.

Pectoral girdle majorly functions to support arms. It contains two bones, the  clavicle and scapula.

Pectoral girdle can also defined as the set of bones in the skeleton that connects to the arm on each side.

Hence, the correct option is A.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: