Which of the following could be considered an artifact by an archaeologist? Select all that apply.

a branch of a tree found within an old house
a handwritten letter dated 1889
a piece of pottery found in a cave
a horseshoe found in a horse pasture
a bottle retrieved from the floor of the ocean

All of these (all the options )mentioned below in the questions are example of Artifact

Explanation:

An artifact are the objects made or modified by man , that are found by an archaeologist during a archaeological drill

For Example : Fire cracked rocks,whole pottery, pot shards, stone tools, decorative and religious artworks, bones of the animals , human remains.

so the answer of the question is

all of the above

answer; the civil right act of 1964;