1 and 2 are fine. 3 is very wordy (2 is far better!).
In #2, "where they want to go" is a noun clause serving as the direct object after the verb (infinitive) "to get".
http://www.grammar-monster.com/glossary/noun_clauses.htm
1. Dogs are not the only helper animals.
2. They can help blind people to get where they want to go.
3. They can help blind people to get to the place where they want to go.
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Q1 : Are they all grammatical?
Q2: Does #2 mean #3?
Q3: What is the part of speech of 'where they want to go' in Sentence 2?
1 answer