What are the advantages of using pea plants to study heredity * O only reproduce asexually
O easily observable traits
only reproduce by self-fertilization
O provide food​

There's many advantages of using pea plants as their traits are easily observable and have short life cycle.

Therefore the correct option is :

O easily observable traits

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answer; ///i believe the answer is (antioxidant);

d

explanation:

the higher the instrument the better