Fill in the correct form for each of the blank spaces given.

• A. sera, thrombus, bacterium, larynges, crisis, bronchi
• B. serums, thrombus, bacterium, larynges, crisis, bronchuses
• C. sera, thrombs, bacterias, larynxes, crises, bronchi
• D. serum, thrombi, bacterium, larynges, crises, bronchus

Answer: (A)

Verified step by step guidance

1. Step 1: Identify the plural form of 'Serum'. The plural of 'Serum' is 'Sera', which is an irregular plural form derived from Latin.
2. Step 2: Identify the singular form corresponding to the plural 'Thrombi'. 'Thrombi' is the plural of 'Thrombus', following the Latin rule where '-us' changes to '-i' in plural.
3. Step 3: Identify the singular form corresponding to the plural 'Bacteria'. 'Bacteria' is the plural of 'Bacterium', which is a neuter noun in Latin with '-um' changing to '-a' in plural.
4. Step 4: Identify the plural form of 'Larynx'. The plural of 'Larynx' is 'Larynges', where the '-nx' ending changes to '-nges' in plural form.
5. Step 5: Identify the plural form of 'Bronchus'. The plural of 'Bronchus' is 'Bronchi', following the Latin rule where '-us' changes to '-i' in plural.