Use this portion of a dichotomous key for tree identification to answer the question.

1a. needlelike leaf ® step 10
1b. broad leaf ® step 2
2a. compound leaf ® step 3
2b. simple leaf ® step 7
7a. leaf bases attached opposite each other on branch ® step 8
7b. leaf bases attached staggered on branch ® step 11
8a. leaves lobed ® maple
8b. leaves not lobed ® step 9
9a. leaves heart shaped ® catalpa
9b. leaves not heart shaped ® dogwood

which best describes dogwood leaves?
they are lobed, simple leaves and are attached staggered on the branch.
they are not heart shaped and are attached staggered on the branch.
they are compound, broad leaves and are attached oppositely on the branch.
they are nonlobed, simple leaves and are attached oppositely on the branch.