The correct answer is option 'C', James Hargreaves.

James Hargreaves, a weaver and carpenter from Lancashire, England, is credited with devising the Spinning Jenny in the mid-1760s. The Spinning Jenny was an important invention during the Industrial Revolution as it revolutionized the textile industry by increasing the efficiency of the spinning process.

Here is a detailed explanation of James Hargreaves' role in the development of the Spinning Jenny:

1. Background:
- During the 18th century, the textile industry in England was primarily based on the domestic system, where spinning was done by hand using a spinning wheel.
- However, this method was slow and could not keep up with the increasing demand for textiles.

2. Invention of the Spinning Jenny:
- In the 1760s, Hargreaves developed the Spinning Jenny, a multi-spindle spinning frame that could spin several threads simultaneously.
- The exact origin of the name "Spinning Jenny" is uncertain, but it is believed to be named after Hargreaves' daughter or wife.

3. Functionality and Features:
- The Spinning Jenny consisted of a simple wooden frame with multiple horizontal spindles.
- Each spindle had a series of bobbins attached to it, which could hold different threads.
- The operator would manually turn a single wheel, which in turn rotated all the spindles simultaneously.
- This allowed for the simultaneous spinning of multiple threads, significantly increasing productivity.

4. Advantages and Impact:
- The Spinning Jenny allowed a single operator to produce several spools of thread at once, reducing the labor required for spinning.
- It increased the speed and efficiency of the spinning process, leading to a higher output of yarn.
- The invention played a crucial role in the growth of the textile industry, as it made textiles more affordable and accessible to a larger population.

In conclusion, James Hargreaves, a weaver and carpenter from England, is credited with devising the Spinning Jenny in the mid-1760s. This invention revolutionized the textile industry by increasing productivity and efficiency in the spinning process.