The correct answer is C. to pledge sourcing 100% of its electricity from renewable sources, because RE100 is a global corporate renewable electricity initiative led by the Climate Group in partnership with CDP.

RE100 brings together major businesses committed to transitioning their electricity procurement to renewable sources.

The Climate Group's official RE100 membership register confirms that Cisco joined in 2023, with a target year of 2030 for its renewable electricity commitment.

theclimategroup.org

Cisco's participation demonstrates its commitment to accelerating renewable energy adoption, reducing electricity-related greenhouse gas emissions, and supporting broader clean energy market development.

Renewable electricity procurement can include on-site solar installations, utility green power agreements, power purchase agreements, and eligible energy attribute certificates.

Cisco's strategy also emphasizes long-term procurement mechanisms that can support additional renewable electricity generation.

In fiscal 2025, Cisco reported sourcing renewable electricity equivalent to 100% of its annual electricity requirements across company-owned and leased facilities globally.

Cisco Purpose Reporting Hub

This achievement does not necessarily mean every facility consumed renewable electricity at every moment; it refers to annual procurement matching.

Options A and D concern software development and product expansion, while Option B directly contradicts the RE100 commitment.