The OSI layer that routes packets using IP .3

The OSI layer that routes packets using IP .3

1.The OSI layer that routes packets using IP .3
: addresses is explain it

A. Layer-3.

B. Layer-2.

C. Layer-4.

D. Layer-7.

2.*:ICMP and IGMP are protocols in layer .4 explain

A. 3.

B. 2.

C. 7.

D. 4.