The costume of the unidentified ............. suggests the approximate dating of this photo to 1890-1895. a) sitter b) apprentice c) figure d) connoisseur

To determine the most appropriate choice that completes the sentence, we should consider the context of the sentence regarding dating a photograph based on clothing.

1. Analyze Each Option:

   • a) sitter: This implies a person who is posing for the photo. The term is commonly used in the context of photography and art to refer to the individual being depicted.
   • b) apprentice: This term generally refers to someone who is learning a trade or skill under the guidance of a more experienced professional. It does not specifically relate to the context of the photo's dating.
   • c) figure: This is a more general term that could refer to any person depicted in the photo. However, it lacks specificity regarding the clothing or the context of dating.
   • d) connoisseur: This term refers to an expert judge in matters of taste, often in relation to fine arts. It doesn't connect directly to the context of dating a photograph based on attire.

2. Contextual Relevance: The sentence indicates that the costume of the unidentified individual in the photo helps to approximate the dating. The term "sitter" aligns most closely with this idea, as it refers to a person who would typically be attired in the manner noted.

Conclusion

The best completion for the sentence is: a) sitter. This option correctly implies that the clothing of the person posing in the photo provides information about the era it was taken in.