Question

Select the plural of the foreign word, ‘diagnosis’.
A) Diagnoses
B) Diagnosis’s
C) Diagnosises
D) Diagnosa

Answer 1

Hint: There are two numbers in English – the Singular Number denoting one person or thing and the Plural Number denoting more than one person or thing. A Singular Noun must be followed by a Singular Verb and a Plural Noun by a Plural Verb.

Complete answer:
The plural of a noun regularly signifies an amount more noteworthy than the default amount addressed by that thing. A foreign plural is a noun acquired from another dialect that has kept its unique plural structure instead of adjusting the typical English plural completion of - s. Words acquired from traditional Greek and Latin have in general kept their unfamiliar plurals in English longer than most other unfamiliar borrowings.

Let us analyze the given options:
Option A) Diagnoses is the correct answer because, it is a foreign singular word and foreign singular words ending in -ex, ix, -is should be converted into plural by adding -es to them instead of those said ending sounds.
Option B) Diagnosis’s is an incorrect answer. Here, the singular word is added with an apostrophe which is used to show possession, not plural.
Option C) Diagnosises is an incorrect answer. Here, the singular word is added with another ‘s’ sound. But generally, when the existing singular word ends with an ‘s’ sound, we do not add another ‘s’ to it as it makes it more complicated and weird.
Option D) Diagnosa - is an incorrect answer. Here, the option is an invalid one as such a word doesn’t exist.

Thus the correct answer is option ‘A’.

Note: At the point when you expound on more than one of anything, you for the most part utilize a similar word, simply adding -‘s’, ‘es’, or ‘ies’ to the end. Different types of Plural examples are:
i) Compound Nouns and their plurals:
Brother-in-law - Brothers-in-law

ii) Foreign plurals:
Formula – Formulae
Alumnus – Alumni
Bacterium – Bacteria
Index – Indexes or Indices
Criterion – Criteria