Answer: Option C
Apparent : clearly visible or understood; obvious.
Explicit : stated clearly and in detail, leaving no room for confusion or doubt.
"the arrangement had not been made explicit"
Frank : open, honest, and direct in speech or writing, especially when dealing with unpalatable matters.
Bright : giving out or reflecting much light; shining.
Candid : truthful and straightforward; frank.
Synonym of Candid is Frank