Answer
$B∩D = \{ 5,7 \}$
Work Step by Step
$B = \{x|x$ is an odd integer $\} $ $= \{1,3,5,7,9,11,...... \}$
$D= \{ 4,5,6,7 \}$
Numbers $5$ and $7$ are in both sets B and D. Therefore,
$B∩D = \{ 5,7 \}$
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