Select the functional groups in penicillin g, which is a naturally occurring antibiotic.

Penicillin G ( or Benzylpenicillin ) is one of the derivatives of penicillin.
Functional groups in Penicillin G are:
- ether group,
- phenyl group,
- 2 amide groups,
- carboxylic acid group.

It is less likely that the shoe will slip while someone is walking

The answer would be d. most contraceptives are effective when used properly