Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to communicate with a mentally challenged person [title] Don't assume that someone has an intellectual disability based on the ease of their speech. [step] Some people who have difficulty speaking, such as people with cerebral palsy and some autistic people, are on average just as smart as anyone else. A disability accent, slow speech, or halting speech doesn't always mean an intellectual disability.

Ending1: [substeps] Use your brain's visual picture if you really can't picture how someone talks if you haven't met this individual yet. Their speech style will vary depending on how well you understand them. Ending2: [substeps] Speech often involves strong verbs and multiple reaxes. For a speaker who isn't disabled, the majority of their speech is grammatically incorrect. Ending3: [substeps] If a person has problems speaking, it may be related to their intellectual disability. For example, a speech impairment could be due to a functional disability, where they have trouble using high-pitched pitches. Ending4: [substeps] People who can't speak can be of any intelligence level. Body language does not relate to intelligence either.

Answer format: ending1/ending2/ending3/ending4