Draw the major product for the reaction of 1-butyne with water in the presence of catalytic TfOH (i. e., CF3SO3H). Then answer the additional question regarding this transformation.

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.