Cobalt is a key material for modern lithium$-$ion batteries key to EVs. What are the challenges

regarding the sourcing of Cobalt. $($Select all that apply$)$

a$.$ Most known cobalt is mined in the Democratic Republic of Congo $($DRC$),$ a

country known for questionable governance.

b$.$ Artisanal mines in the DRC are often linked to child labor and unsafe work

conditions.

c$.$ Cobalt is a deadly chemical and toxic dumping is devastating landscapes,

polluting water, and contaminating crops.

d$.$ The Responsible Cobalt Initiative, for example, aims to improve working

conditions in the DRC$$s cobalt mines.