Which among the following is the correct difference between flying lizard and bird?

The correct option is B All of the above.
The differences between flying lizards and birds are as follows.
(i) Flying lizards:

(a) It belongs to class Reptilia.

(b) It is a cold-blooded animal.

(c) It has a 3-chambered heart.

(d) The body is covered with scales.

(e) It has free forelimbs.
(ii) Birds:

(a) It belongs to class Aves.

(b) It is warm-blooded.

(c) It has a 4-chambered heart.

(d) The body is covered with feathers.

(e) Forelimbs are modified as wings.