Option A combines authoritative identity membership, device context, application scope, and deny-by-default enforcement. SCIM keeps the contractor group synchronized with the identity provider, while the ZPA Access Policy limits that group to specifically defined application segments. Device-posture conditions can then require an acceptable security state for each sensitive access attempt. Zscaler’s SCIM Groups documentation confirms that synchronized groups can be used to enforce policy. Its Access Policy documentation lists device posture and other contextual criteria for restricting application access. URL Filtering governs internet destinations and cannot replace ZPA private-application authorization. Location-based access extends trust from the network and ignores the inconsistent endpoint posture described in the scenario. MFA strengthens authentication but does not justify broad application access; least privilege still requires narrow application entitlements and contextual policy evaluation.

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