1. Plate 2. Plane 3. Plaster 4. Plasma  5. Plastic

First three letter of all the words are same so verifying the fourth letter.

The fourth letter of plane is 'n' which comes before 's' and 't' in alphabetical order, so Plane will be the first word in order and Plate will be the last in order.

Plasma will be the second in order since fifth letter 'm' comes before 't' in alphabetical order.

From Plaster and Plastic, Plaster is placed before Plastic since the sixth letter of Plastic i.e, 'e' comes before 'i' in alphabetical order.

∴ The order of the givens words according to English dictionary is Plane, Plasma, Plaster, Plastic, Plate

Hence, the correct answer is Option B