? also known as "whalebone," is a tough keratinous substance from the mouths of filter-feeding whales. In texture, it is comparable to modern plastics, and has long been used by Native Arctic peoples to make buckets, cups, and other containers, ice scoops, sled runners, fish line, lashing, and nets.
O a. Spruce root
O b. Baleen
O c. Argillite
O d. Sinew

The answer to this question is b.

Can i see the pictures

Idid the quiz. the true answers to this question is  2.michelangelo used the hatching technique of drawing parallel line close together  1.leonardo used the sfumato technique of blending and blurring chalk so edges nearly dissapear3.van gogh used a variety of expressive strokes to create different surfaces and textures. to the above answer, i got it wrong. i have copy-pasted from the question, putting the answers here.i hope this .  ~rosy67read more on -

What are the choices?