Select the sentence that is complete and properly punctuated

$$A$.$ As children begin to understand the realities of the wider world, the possibility of personal harm may trouble them, in addition, common worries include academic failure and peer rejection.

academic failure and peer rejection

$$ C$.$ As children begin to understand the realities of the wider world, the possibility of personal harm may trouble them in addition common worries include academic failure and peer rejection.

$$ D$.$

academic failure and peer rejection.

$$ B$.$ As children begin to understand the realities of the wider world, the possibility of personal harm may trouble them in addition, common worries include

As children begin to understand the realities of the wider world, the possibility of personal harm may trouble them; in addition, common worries include