**will mark brainliest and you**

three portions of a blood sample show clumps in anti-a serum, but not anti-b or anti-rh sera.
which blood type does the test indicate?

a. a negative (a-)

b. ab positive (ab+)

c. b negative (b-)

d. o negative (o-)

If you add a drop of anti-A serum and it clumps the blood type has blood type B markers that will fight off the A serum making the blood type B  

I got this because...  

there is A, B, AB, and O blood  

A has anti-B clumping proteins  

B has anti-A clumping proteins  

AB has no clumping proteins  

O has anti-A, anti-B, and anti-AB clumping proteins  

so the only on one with anti-A clumping proteins is blood type B  

hope this helps :)

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above

the titanic would be the correct answer