Which task does a welder do?
a. collects and analyzes data before presenting it to the public
b. determines how a team could complete a process more efficiently
c. diagnoses plant diseases and determines how to treat them
d. uses a blowtorch to complete a project according to the blueprint
e. writes the building codes and standards for construction projects

the correct answer is D

Explanation:

because it says what a welder does

(D) Uses a blowtorch to complete a project according to the blueprint

Explanation:

 Welder basically fabricate various types of metal arts and join together all the fabricated metal parts. This process is known as welding as, it is one of the chemical process where the two parts of the metals are get fused together.

 The main task of the welder is that it uses the blowtorch equipment to fused different types of metal parts together for complete its given project accordingly to the given blueprint o the project.

Therefore, Option (D) is correct.