To solve this problem, we need to analyze the given statements about vision and carotene-rich food:$\newline \bullet$(a) Vitamin A derivatives are formed from carotene.$\newline$ - Carotene is a precursor to vitamin A, which is essential for good vision.$\newline$ - This statement is correct.$\newline \bullet$(b) The photo-pigments are embedded in the membrane discs of the inner segment.$\newline$ - Photo-pigments are actually embedded in the membrane discs of the outer segment of photoreceptor cells, not the inner segment.$\newline$