Here's why:

* Chiral carbon: A carbon atom is chiral if it is bonded to four different groups.

* L-Dopa structure: L-Dopa has the following structure: HOOC-CH(NH2)-CH2-C6H4-OH.

Looking at the structure:

1. The carbon atom bonded to the carboxyl group (COOH) is chiral because it's bonded to:

* A hydrogen atom (H)

* An amino group (NH2)

* A methylene group (CH2)

* A phenyl ring (C6H4)

2. The carbon atom bonded to the amino group (NH2) is also chiral because it's bonded to:

* A hydrogen atom (H)

* A carboxyl group (COOH)

* A methylene group (CH2)

* A phenyl ring (C6H4)

Therefore, L-Dopa has two chiral carbon atoms.

Note: The "L" in L-Dopa refers to the configuration of the chiral center closest to the amino group, which is the one we discussed second. The "L" designation is used for amino acids and refers to the enantiomer that rotates plane-polarized light to the left.