Fill in the most appropriate modal from the given options.

Measles _____ be quite dangerous.

can

The correct answer is Option (2) → can

• Understanding the Context:

  • The sentence discusses the possibility or capacity of measles to be dangerous.
  • The modal verb "can" is used to express general truths or possibilities.

• Why "Can" is Correct:

  • "Can" indicates that measles has the potential to be dangerous, which aligns with the general fact or reality about the disease.

• Why the other options are incorrect:

  • "Could" → Implies hypothetical or uncertain possibility, which is not appropriate for this factual statement.
  • "Should" → Implies advice or recommendation, which does not fit the context.
  • "Would" → Refers to hypothetical or conditional scenarios, not general truths.

The correct option is can because measles is inherently capable of being quite dangerous.