Which statement correctly uses measurement vocabulary to compare lengths?

• A. This pencil is longer than that pencil.
• B. This pencil is more long than that pencil.
• C. This pencil is the longest of the two.
• D. This pencil is tall than that pencil.

Answer: (A)

The main idea is using the correct measurement vocabulary for length and proper comparative grammar. When comparing two objects, you describe which has more length with the word longer and link the items with than. This pencil is longer than that pencil correctly states which one is longer and uses the appropriate length vocabulary and grammar.

Other options don’t fit for these reasons: “more long” isn’t how English forms a length comparison; the standard form is longer. “The longest of the two” uses a superlative, which isn’t appropriate when only comparing two items—typically you’d say the longer of the two. And length is about horizontal stretch, while tall refers to vertical height, so even if corrected to say taller, it would be describing height, not length.