The leading producer of GHG (greenhouse gases) in the digital sector is:a.Smartphonesb.Networksc.Desktops and tabletsd.Data centres use and manufacture

To determine the leading producer of greenhouse gases (GHG) in the digital sector among the given options, we should consider the entire lifecycle and usage of each category of technology.

1. Smartphones: While smartphones are widely used, their production and use have a relatively lower GHG emissions footprint compared to larger technology infrastructures.

2. Networks: Networking equipment, including routers and switches, has a significant carbon footprint, especially as data traffic continues to grow. However, the energy consumption typically pales in comparison to larger systems.

3. Desktops and Tablets: Desktops and tablets contribute to GHG emissions during production and operation. Yet, they are less intensive in emissions compared to data centers.

4. Data Centres Use and Manufacture: Data centers are essential for storing and processing large amounts of data. They consume vast amounts of electricity, which is often generated from fossil fuels, leading to substantial GHG emissions. They are recognized as major contributors to the digital sector's overall carbon footprint.

Conclusion

Considering the above factors, d. Data centres use and manufacture is the leading producer of GHG in the digital sector. Data centers are known for their high energy consumption and significant carbon emissions, placing them at the forefront of GHG production in this industry.