The best implementation to give the best central visibility into the events occurring throughout the corporate environment without logging in to the servers individually is B. Configure the servers to forward logs to a SIEM.
A SIEM (Security Information and Event Management) is a security solution that helps organizations detect, analyze, and respond to security threats before they disrupt business. SIEM tools collect, aggregate, and correlate log data from various sources across an organization's network, such as applications, devices, servers, and users. SIEM tools also provide real-time alerts, dashboards, reports, and incident response capabilities to help security teams identify and mitigate cyberattacks.
By configuring the servers to forward logs to a SIEM, the security analysts can have a central view of potential threats and monitor security incidents across the corporate environment without logging in to the servers individually. This can save time, improve efficiency, and enhance security posture. Deploying a database to aggregate the logging (A) may not provide the same level of analysis, correlation, and alerting as a SIEM tool. Sharing the log directory on each server to allow local access may not be scalable or secure for a large number of servers. Automating the emailing of logs to the analysts (D) may not be timely or effective for real-time threat detection and response. Therefore, B is the best option among the choices given.

Use of insecure functions can make it much harder to secure code.
Functions like strcpy, which don't have critical security features built in, can result in code that is easier for attackers to target. In fact, strcpy is the only specific function that the CySA+ objectives call out, likely because of how commonly it is used for buffer overflow attacks in applications written in C. strcpy allows data to be copied without caring whether the source is bigger than the destination. If this occurs, attackers can place arbitrary data in memory locations past the original destination, possibly allowing a buffer overflow attack to succeed.