A verb phrase consists of the main verb alone, or a main verb plus any modal or auxiliary verb. The main verb always comes last in the verb phrase.
1. The sentence that contains a verb phrase is option B: Some giant sequoia trees have lived for thousands of years. The verb phrase of this sentences consists of a perfect, have plus -ed form.
2. The sentence that contains a verb phrase is option A: Guide dogs are allowed in public places with their owners. The verb phrase of this sentences consists of passive, be plus -ed form.